{"title":"Tests","description":"","products":[{"product_id":"reef-zlements-icp-standard-saltwater-test-1-pack","title":"Reef Zlements ICP Standard Saltwater Test 1 Pack","description":"\u003cp data-start=\"89\" data-end=\"155\"\u003eICP Test – Comprehensive Elemental Analysis for Reef Aquariums\u003c\/p\u003e\n\u003cp data-start=\"157\" data-end=\"578\"\u003eOur ICP Test provides a highly accurate snapshot of your aquarium’s elemental balance, detecting over 40 key elements down to parts per billion (ppb). Designed as a reliable starting point for diagnosing elemental imbalances, it helps identify deficiencies, contaminants, and potential toxicity—ensuring long-term reef stability and coral health. Perfect for regular monitoring and maintaining a finely tuned reef system.\u003c\/p\u003e\n\u003cp data-start=\"580\" data-end=\"778\"\u003eKey Features\u003cbr data-start=\"596\" data-end=\"599\"\u003eA precise diagnostic tool for reef aquariums, detecting 40+ elements at ultra-low concentrations (ppb). Ideal for routine testing to prevent major imbalances or harmful build-ups.\u003c\/p\u003e\n\u003cp data-start=\"780\" data-end=\"1211\"\u003eTested Parameters\u003cbr data-start=\"801\" data-end=\"804\"\u003eBoron, Bromine, Calcium, Chloride, Magnesium, Potassium, Sodium, Strontium, Sulphur, Barium, Beryllium, Chromium, Cobalt, Copper, Iodine, Iron, Lithium, Manganese, Molybdenum, Nickel, Selenium, Silicon, Tin, Vanadium, Zinc, Aluminium, Antimony, Arsenic, Bismuth, Cadmium, Germanium, Lanthanum, Lead, Mercury, Scandium, Silver, Thallium, Titanium, Tungsten, Zirconium, Phosphorous, Total Phosphate, Salinity.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51936899662165,"sku":"Z-ICP-1PACK","price":28.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/standardicp.avif?v=1763423446"},{"product_id":"reef-zlements-icp-advanced-saltwater-ro-di","title":"Reef Zlements ICP Advanced Saltwater \u0026 RO\/DI","description":"\u003cp data-start=\"167\" data-end=\"226\"\u003eAdvanced ICP Test – Full Aquarium \u0026amp; RODI Water Analysis\u003c\/p\u003e\n\u003cp data-start=\"228\" data-end=\"545\"\u003eThis advanced test provides a complete elemental assessment of both your aquarium and RODI water, ensuring total system clarity and peace of mind. It detects over 40+ elements in your makeup water, helping identify contaminants, validate filtration efficiency, and prevent unwanted pollutants from entering your reef.\u003c\/p\u003e\n\u003cp data-start=\"547\" data-end=\"878\"\u003eIn addition to the full spectrum of standard ICP-OES elements, this test includes 13 extra parameters—covering key water chemistry fundamentals such as alkalinity, conductivity, nitrate, nitrite, and pH. This expanded dataset gives you a precise and comprehensive view of your reef’s overall stability and your RODI water’s purity.\u003c\/p\u003e\n\u003cp data-start=\"880\" data-end=\"1324\"\u003eStandard Parameters Measured:\u003cbr data-start=\"913\" data-end=\"916\"\u003eBoron, Bromine, Calcium, Chloride, Magnesium, Potassium, Sodium, Strontium, Sulphur, Barium, Beryllium, Chromium, Cobalt, Copper, Iodine, Iron, Lithium, Manganese, Molybdenum, Nickel, Selenium, Silicon, Tin, Vanadium, Zinc, Aluminium, Antimony, Arsenic, Bismuth, Cadmium, Germanium, Lanthanum, Lead, Mercury, Scandium, Silver, Thallium, Titanium, Tungsten, Zirconium, Phosphorous, Total Phosphate \u0026amp; Salinity.\u003c\/p\u003e\n\u003cp data-start=\"1326\" data-end=\"1535\"\u003eAdditional 13 Parameters:\u003cbr data-start=\"1355\" data-end=\"1358\"\u003eAcid Binding Capacity, Alkalinity, Calcium Carbonate Equivalent, Colour, Sulphate, Conductivity, pH, Smell, Specific Gravity\/Density, Nitrate, Nitrite, Orthophosphate, Fluoride.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51936928465237,"sku":null,"price":40.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/advancedicp.avif?v=1763424724"},{"product_id":"nyos-calcium-test-kit","title":"Nyos Calcium Test Kit","description":"\u003cp data-start=\"196\" data-end=\"553\"\u003eNYOS® REEFER Test Kits deliver laboratory-grade seawater analysis at an accessible price.\u003cbr data-start=\"289\" data-end=\"292\"\u003eBecause seawater contains many interfering ions, accurate measurement requires test kits designed specifically for marine conditions. NYOS® REEFER kits are engineered to provide high-precision, reproducible results that match the needs of modern reef aquariums.\u003c\/p\u003e\n\u003cp data-start=\"555\" data-end=\"1030\"\u003eThese kits combine professional-level accuracy with excellent value, making advanced water testing attainable for everyday hobbyists. Each kit features a calibrated German-made dropper for consistent reagent dosing, reagents produced in Germany under EN ISO 9001 standards, and strict batch testing verified against AAS and NIST references. Clear pictogram-based instructions ensure ease of use, and every component is manufactured to deliver stable, repeatable measurements.\u003c\/p\u003e\n\u003cp data-start=\"1032\" data-end=\"1210\"\u003eNYOS® REEFER Test Kits provide the reliability you need to maintain water parameters as close to natural seawater as possible, giving your reef the foundation it needs to thrive.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51940761239893,"sku":"10572","price":17.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/calciumtest1.webp?v=1763483874"},{"product_id":"nyos-nitrate-test-kit","title":"Nyos Nitrate Test Kit","description":"\u003cp data-start=\"196\" data-end=\"553\"\u003eNYOS® REEFER Test Kits deliver laboratory-grade seawater analysis at an accessible price.\u003cbr data-start=\"289\" data-end=\"292\"\u003eBecause seawater contains many interfering ions, accurate measurement requires test kits designed specifically for marine conditions. NYOS® REEFER kits are engineered to provide high-precision, reproducible results that match the needs of modern reef aquariums.\u003c\/p\u003e\n\u003cp data-start=\"555\" data-end=\"1030\"\u003eThese kits combine professional-level accuracy with excellent value, making advanced water testing attainable for everyday hobbyists. Each kit features a calibrated German-made dropper for consistent reagent dosing, reagents produced in Germany under EN ISO 9001 standards, and strict batch testing verified against AAS and NIST references. Clear pictogram-based instructions ensure ease of use, and every component is manufactured to deliver stable, repeatable measurements.\u003c\/p\u003e\n\u003cp data-start=\"1032\" data-end=\"1210\"\u003eNYOS® REEFER Test Kits provide the reliability you need to maintain water parameters as close to natural seawater as possible, giving your reef the foundation it needs to thrive.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51940771987797,"sku":"10575","price":21.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/nitratetest.webp?v=1763483794"},{"product_id":"nyos-alkalinity-test-kit","title":"Nyos Alkalinity Test Kit","description":"\u003cp data-start=\"196\" data-end=\"553\"\u003eNYOS® REEFER Test Kits deliver laboratory-grade seawater analysis at an accessible price.\u003cbr data-start=\"289\" data-end=\"292\"\u003eBecause seawater contains many interfering ions, accurate measurement requires test kits designed specifically for marine conditions. NYOS® REEFER kits are engineered to provide high-precision, reproducible results that match the needs of modern reef aquariums.\u003c\/p\u003e\n\u003cp data-start=\"555\" data-end=\"1030\"\u003eThese kits combine professional-level accuracy with excellent value, making advanced water testing attainable for everyday hobbyists. Each kit features a calibrated German-made dropper for consistent reagent dosing, reagents produced in Germany under EN ISO 9001 standards, and strict batch testing verified against AAS and NIST references. Clear pictogram-based instructions ensure ease of use, and every component is manufactured to deliver stable, repeatable measurements.\u003c\/p\u003e\n\u003cp data-start=\"1032\" data-end=\"1210\"\u003eNYOS® REEFER Test Kits provide the reliability you need to maintain water parameters as close to natural seawater as possible, giving your reef the foundation it needs to thrive.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51940777066837,"sku":"10573","price":11.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/alktest.webp?v=1763483963"},{"product_id":"nyos-magnesium-test-kit","title":"Nyos Magnesium Test Kit","description":"\u003cp data-start=\"196\" data-end=\"553\"\u003eNYOS® REEFER Test Kits deliver laboratory-grade seawater analysis at an accessible price.\u003cbr data-start=\"289\" data-end=\"292\"\u003eBecause seawater contains many interfering ions, accurate measurement requires test kits designed specifically for marine conditions. NYOS® REEFER kits are engineered to provide high-precision, reproducible results that match the needs of modern reef aquariums.\u003c\/p\u003e\n\u003cp data-start=\"555\" data-end=\"1030\"\u003eThese kits combine professional-level accuracy with excellent value, making advanced water testing attainable for everyday hobbyists. Each kit features a calibrated German-made dropper for consistent reagent dosing, reagents produced in Germany under EN ISO 9001 standards, and strict batch testing verified against AAS and NIST references. Clear pictogram-based instructions ensure ease of use, and every component is manufactured to deliver stable, repeatable measurements.\u003c\/p\u003e\n\u003cp data-start=\"1032\" data-end=\"1210\"\u003eNYOS® REEFER Test Kits provide the reliability you need to maintain water parameters as close to natural seawater as possible, giving your reef the foundation it needs to thrive.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51940785979733,"sku":"1\r0\r5\r7\r4","price":17.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/magtest.webp?v=1763484060"},{"product_id":"reef-zlements-icp-advanced-triple-ro","title":"Reef Zlements ICP Advanced Triple \u0026 RO","description":"\u003cp data-start=\"150\" data-end=\"534\"\u003eThis bundle offers excellent value for bulk ICP testing, including a free RO test with every purchase. It’s ideal for hobbyists who want consistent monthly monitoring or those running multiple aquariums and looking to compare water chemistry side by side. By combining tests into one package, it saves both time and money while ensuring high-quality, frequent analysis of your system.\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"1031\"\u003eEach ICP test covers an extensive list of standard seawater parameters, including boron, bromine, calcium, chloride, magnesium, potassium, sodium, strontium, sulphur, barium, beryllium, chromium, cobalt, copper, iodine, iron, lithium, manganese, molybdenum, nickel, selenium, silicon, tin, vanadium, zinc, aluminium, antimony, arsenic, bismuth, cadmium, germanium, lanthanum, lead, mercury, scandium, silver, thallium, titanium, tungsten, zirconium, phosphorous, total phosphate, and salinity.\u003c\/p\u003e\n\u003cp data-start=\"1033\" data-end=\"1535\"\u003eIn addition to these core measurements, the test also reports thirteen further parameters for a deeper understanding of your water chemistry. These include acid binding capacity, alkalinity, calcium carbonate equivalent, colour, sulphate, conductivity, pH, smell, specific gravity\/density, nitrate, nitrite, orthophosphate, and fluoride. This comprehensive coverage ensures you receive a complete and accurate snapshot of your aquarium’s health, helping you maintain optimal conditions with confidence.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51948147179861,"sku":null,"price":118.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/icpadvanced3x.avif?v=1763591793"},{"product_id":"reef-zlements-icp-new-gen-green-triple-saltwater","title":"Reef Zlements ICP New Gen Green Triple Saltwater","description":"\u003cp data-start=\"182\" data-end=\"606\"\u003eStay fully in control of your reef system with the Reef Zlements Triple New Gen ICP Test Pack. Designed for reefkeepers who want consistent, reliable, and comprehensive water analysis, this triple pack offers excellent value while including a free RO water test. Ideal for routine monthly testing or comparing multiple aquariums side-by-side, it helps you stay ahead of potential issues and maintain long-term stability.\u003c\/p\u003e\n\u003cp data-start=\"608\" data-end=\"928\"\u003eEach test provides an extensive breakdown of your water chemistry, analysing both essential macro-elements and a wide spectrum of trace and ultra-trace elements. With the New Gen testing platform, you get fast turnaround, high precision, and clear actionable results to fine-tune your dosing and overall reef management.\u003c\/p\u003e\n\u003cp data-start=\"930\" data-end=\"1373\"\u003eStandard Parameters Analysed:\u003cbr data-start=\"963\" data-end=\"966\"\u003eBoron, Bromine, Calcium, Chloride, Magnesium, Potassium, Sodium, Strontium, Sulphur, Barium, Beryllium, Chromium, Cobalt, Copper, Iodine, Iron, Lithium, Manganese, Molybdenum, Nickel, Selenium, Silicon, Tin, Vanadium, Zinc, Aluminium, Antimony, Arsenic, Bismuth, Cadmium, Germanium, Lanthanum, Lead, Mercury, Scandium, Silver, Thallium, Titanium, Tungsten, Zirconium, Phosphorous, Total Phosphate, Salinity.\u003c\/p\u003e\n\u003cp data-start=\"1375\" data-end=\"1584\"\u003eAdditional 13 Parameters:\u003cbr data-start=\"1404\" data-end=\"1407\"\u003eAcid Binding Capacity, Alkalinity, Calcium Carbonate Equivalent, Colour, Sulphate, Conductivity, pH, Smell, Specific Gravity\/Density, Nitrate, Nitrite, Orthophosphate, Fluoride.\u003c\/p\u003e\n\u003cp data-start=\"1586\" data-end=\"1789\"\u003eThe Triple New Gen ICP pack delivers exceptional value and complete analytical insight, making it an essential tool for any aquarist committed to achieving peak coral health and long-term reef stability.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":51948164874581,"sku":null,"price":75.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/3xgreenicp.webp?v=1763592195"},{"product_id":"nyos-phosphate-test-kit","title":"Nyos Phosphate Test Kit","description":"\u003cp\u003eThe NYOS Reefer Phosphate Test Kit provides highly sensitive, lab-quality monitoring of phosphate (PO₄) levels in saltwater aquariums. It measures phosphate in the range 0.025–1.00 mg\/L (ppm) and includes reagents, glass test vials, a calibrated dropper, a colour chart, and a sliding comparator for accurate, repeatable results. With enough reagents for about 50 tests, it’s ideal for regular monitoring to help maintain stable water chemistry and prevent algae issues. Designed specifically for marine water, this kit ensures reliable and reproducible phosphate measurements — key for healthy reef and saltwater tanks.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52009350496597,"sku":"10576","price":21.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/phoskit.webp?v=1764596416"},{"product_id":"ntlabs-marine-multi-test-kit","title":"NTlabs Marine Multi Test Kit","description":"\u003cp\u003eThe NT Labs Marine Multi Test Kit lets you easily monitor four key water parameters — ammonia, nitrite, nitrate and pH — using accurate liquid reagents. It’s designed for marine aquariums and offers up to 155 combined tests in one box. The kit includes test tubes, a colour-chart guide, a test-tube rack, and colour-coded labels to avoid contamination, making testing simple and repeatable. Measuring results in terms of nitrogen (NH₃-N, NO₂-N, NO₃-N) offers compatibility with most fishkeeping water-quality guidelines. Regular testing with this kit helps you catch and correct water-quality issues early — essential for keeping fish or corals healthy.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52010739007829,"sku":"RH148","price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/multitestkit.webp?v=1764612747"},{"product_id":"ntlabs-reef-multi-test-kit","title":"NTlabs Reef Multi Test Kit","description":"\u003cp\u003eThe NT Labs Marine Lab Reef Multi-Test Kit gives reef aquarists a reliable, all‑in‑one tool to monitor the four essential water parameters critical for coral and marine tank health: carbonate hardness (KH), magnesium, calcium, and phosphate. The kit uses a mix of liquid‑drop and titration tests — offering higher accuracy than simple strip kits — and includes all necessary equipment: syringes, pipettes, titration vessels, colour‑coded labels, and clear pictorial instructions. With up to 145 combined tests per kit, it’s ideal for regular monitoring and maintenance. By regularly checking and adjusting levels, you can help ensure stable water chemistry, promote coral growth, and prevent nutrient imbalances that can harm reef inhabitants.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52010758537557,"sku":"RH149","price":35.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/reefmultitestkit.webp?v=1764612852"},{"product_id":"ntlabs-carbonate-hardness-kh-test-kit","title":"NTlabs Carbonate Hardness KH Test Kit","description":"\u003cp\u003eThe NT Labs KH Test Kit lets you quickly and accurately measure carbonate hardness — a key indicator of buffering capacity and pH stability — in marine or freshwater aquariums. The drop-and-titration reagent method delivers precise readings in dKH, so you know exactly how stable your water’s chemistry is. Ideal for reef tanks and sensitive setups, it helps you maintain the correct KH level (typically around 7 dKH for seawater, or 7–14 dKH depending on your system) to avoid pH swings that can stress fish and corals. Regular testing ensures you can adjust with buffer or water changes before problems arise, helping keep your aquatic environment healthy and balanced.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011240653141,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/khtest.webp?v=1764621820"},{"product_id":"ntlabs-ph-test-kit","title":"NTlabs Ph Test Kit","description":"\u003cp\u003eThe NT Labs Marine Lab pH Test Kit provides a quick and accurate way to measure water acidity\/alkalinity in marine, reef, or brackish aquariums. It uses liquid reagents and colour-comparison methods to give clear pH readings — ideal for ensuring a stable, suitable environment for fish and corals. With 40 tests included, it’s compact, easy to use, and an essential tool for routine water monitoring and maintenance.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011246289237,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/phtest.webp?v=1764622012"},{"product_id":"ntlabs-nitrite-test-kit","title":"NTlabs Nitrite Test Kit","description":"\u003cp\u003eThe NT Labs Nitrite Test Kit gives aquarium keepers an accurate, easy method to check nitrite levels (NO₂) — a critical parameter that must always remain at zero for healthy fish. The kit uses a simple liquid-reagent method: collect a 5 ml water sample, add the provided reagent drops, shake and wait for the colour change. After two minutes, compare the colour against the supplied chart — even a faint pink tint signals nitrite presence. With up to 40 reliable tests per kit, it’s essential for monitoring water during cycling, stocking, or routine maintenance and helps you catch harmful nitrite spikes before they stress or harm your stock.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011249336661,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/nitritetest.webp?v=1764622272"},{"product_id":"ntlabs-magnesium-test-kit","title":"NTlabs Magnesium Test Kit","description":"\u003cp data-start=\"210\" data-end=\"534\"\u003eMaintain stable water chemistry in your reef or marine aquarium with this magnesium-specific test kit from NT Labs. The test measures magnesium concentration — a critical element that helps marine invertebrates, corals, and other reef life properly absorb calcium and build skeletons.\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"914\"\u003eThe kit uses a titration method for accuracy: you add the provided reagents to a water sample, then slowly titrate until the colour shifts, giving you a precise reading in mg\/L (ppm). It includes everything you need — test vial, reagents, and clear instructions — and covers about \u003cstrong data-start=\"855\" data-end=\"867\"\u003e35 tests\u003c\/strong\u003e total.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"916\" data-end=\"1200\"\u003eRegular use of this test helps ensure your magnesium stays around the natural seawater level (about 1300–1400 mg\/L), which prevents calcium and carbonate from precipitating and helps maintain stable pH and bioavailability of essential minerals.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1202\" data-end=\"1362\"\u003eWhether used as part of a full testing regime or on its own, the NT Labs Magnesium Test Kit is a simple and reliable tool for ongoing reef-aquarium maintenance.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011264180565,"sku":null,"price":11.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/magnesiumtest.webp?v=1764622572"},{"product_id":"ntlabs-nitrate-test-kit","title":"NTlabs Nitrate Test Kit","description":"\u003cp\u003eThe NT Labs Nitrate Test Kit helps you check nitrate (NO₃) levels in your freshwater (or compatible aquarium\/pond) water quickly and accurately. By measuring nitrate — the final byproduct of the nitrogen cycle — it reveals whether waste buildup may be stressing your fish or fueling algae growth. After adding a 5 ml water sample to the provided test vial and applying the reagents, the sample develops a colour over 5–10 minutes; comparing this to the included chart gives you a clear reading. Regular testing using this kit makes it easy to track water quality and prevent nitrate-related problems before they impact your aquatic life.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011272438101,"sku":null,"price":10.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/nitratetest_79e7dd77-079a-48fc-a38d-6aac36717879.webp?v=1764622777"},{"product_id":"ntlabs-calcium-test-kit","title":"NTlabs Calcium Test Kit","description":"\u003cp data-start=\"195\" data-end=\"636\"\u003eThe NT Labs Calcium Test Kit lets you measure the calcium concentration in your saltwater, reef, or brackish aquarium — a vital parameter for healthy corals, clams, and other calcium-dependent organisms. Because calcium is a building block for skeletons and shells, maintaining levels around 380–450 mg\/L (natural sea-water ~420 mg\/L) is important for steady coral growth and balanced water chemistry.\u003c\/p\u003e\n\u003cp data-start=\"638\" data-end=\"1001\"\u003eThis kit uses a titration method for greater accuracy: you add your sample, reagents, then slowly titrate until the colour change indicates the calcium concentration. It includes all required reagents, a pipette, a test vial, and clear instructions — enough for approximately 35 tests. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1003\" data-end=\"1258\"\u003eRegular testing with this kit helps you avoid problems caused by calcium depletion or imbalance (which can also affect carbonate hardness \/ KH), ensuring stable conditions for coral growth and overall aquarium health.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011286364501,"sku":null,"price":12.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/calciumtest_2980c4bc-40ec-4eb5-948d-9cde87f5b259.webp?v=1764622886"},{"product_id":"ntlabs-phosphate-test-kit","title":"NTlabs Phosphate Test Kit","description":"\u003cp\u003eThe NT Labs Phosphate Test Kit lets you quickly and reliably measure phosphate levels (PO₄) in freshwater or marine aquariums — an important step in preventing algae outbreaks and maintaining stable water chemistry. The kit uses a simple liquid-reagent method: you add a water sample, apply the reagents, shake, wait five minutes for the colour change, then compare the result to the included chart to get a phosphate reading. A typical reef aquarium aims for very low phosphate (around 0.03 mg\/L) to support healthy coral growth and minimise nuisance algae.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011294064981,"sku":null,"price":11.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/phosphatetest.webp?v=1764623165"},{"product_id":"ntlabs-ammonia-test-kit","title":"NTlabs Ammonia Test Kit","description":"\u003cp\u003eThe NT Labs Ammonia Test Kit gives you a simple, reliable way to check ammonia (NH₃\/NH₄⁺) levels in freshwater or marine aquariums — especially critical when cycling a new tank, adding fish, or after filter maintenance. Because ammonia is invisible yet highly toxic to fish and invertebrates, even small amounts can cause stress or illness. The test kit uses a liquid-reagent method: add a small water sample, apply the reagents, wait about 10 minutes, then compare the resulting colour to the supplied chart. A yellow result means zero ammonia, which is ideal — any green tint indicates ammonia presence and potential danger. Regular testing helps you catch ammonia spikes early and act quickly, for instance with water changes or filter boosters, to keep your aquarium environment safe and healthy.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52011296620885,"sku":null,"price":10.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/ammoniatest.webp?v=1764623356"},{"product_id":"salifert-ammonia-test-kit","title":"Salifert Ammonia Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert Ammonia Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert Ammonia Test Kit is a reliable, high-precision water test designed for aquarium hobbyists to monitor ammonia levels in both freshwater and marine systems. Ammonia is highly toxic to fish and invertebrates even at low concentrations, so regular testing is essential for detecting spikes and preventing stress or damage to your livestock.\u003c\/p\u003e\n\u003cp\u003eThis easy-to-use kit delivers clear, accurate results with a simple colour comparison method, helping you quickly assess water quality and take corrective action when needed. Ideal for routine maintenance and troubleshooting, the Salifert Ammonia Test Kit gives you confidence in maintaining a healthy, stable aquarium environment.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300484510037,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/ammoniatest_6726cc65-6c55-424d-8a9e-0c8e320fc9d5.webp?v=1768959816"},{"product_id":"salifert-nitrite-test-kit","title":"Salifert Nitrite Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert Nitrite Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert Nitrite Test Kit is a trusted water testing solution for aquarium hobbyists who need to monitor nitrite levels in freshwater and marine systems. Nitrite is a harmful by-product of the nitrogen cycle that can stress or damage fish and invertebrates, so regular testing helps you catch and correct problems early.\u003c\/p\u003e\n\u003cp\u003eThis easy-to-use kit provides accurate, reliable results with a simple colour comparison method, allowing you to quickly assess nitrite concentration and maintain a healthy, stable aquatic environment. Ideal for routine water quality checks and troubleshooting in any aquarium setup.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300488180053,"sku":null,"price":8.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/nitritetest_cb6073b3-7c15-456e-bd3b-59ae7ae7a9fa.webp?v=1768960049"},{"product_id":"salifert-nitrate-test-kit","title":"Salifert Nitrate Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert Nitrate Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert Nitrate Test Kit is a precise and user-friendly solution for measuring nitrate levels in both freshwater and marine aquariums. Nitrate is the final product of the nitrogen cycle and can build up over time, stressing fish, invertebrates, and corals if left unchecked. This test kit helps you monitor nitrate concentrations accurately so you can maintain optimal water quality and intervene when needed.\u003c\/p\u003e\n\u003cp\u003eDesigned for hobbyists and advanced aquarists alike, the kit uses a clear colour comparison method to deliver reliable results with minimal effort. Regular use of the Salifert Nitrate Test Kit supports healthier livestock and a more stable aquarium environment.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300488900949,"sku":null,"price":10.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/nitratetest_f235bc9b-e050-423d-ad41-6e36c26082d4.webp?v=1768960181"},{"product_id":"salifert-magnesium-test-kit","title":"Salifert Magnesium Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert Magnesium Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert Magnesium Test Kit is a high-accuracy water test designed for aquarium hobbyists who need to measure magnesium levels in marine and reef systems. Magnesium plays a vital role in reef chemistry, helping maintain calcium and alkalinity balance essential for coral growth. Regular testing allows you to keep magnesium within the ideal range, avoid imbalances, and ensure stable water conditions.\u003c\/p\u003e\n\u003cp\u003eThis easy-to-use kit delivers reliable results with a clear colour comparison method, making it suitable for routine water quality checks and troubleshooting. By monitoring magnesium regularly, you can support healthier corals, improved skeletal formation, and overall system stability.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300489294165,"sku":null,"price":13.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/magnesiumtest_e9575567-b19d-4d30-9987-b5c461c91b58.webp?v=1768960302"},{"product_id":"salifert-phosphate-test-kit","title":"Salifert Phosphate Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert Phosphate Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert Phosphate Test Kit is a precise and easy-to-use solution for measuring phosphate (PO₄) levels in both freshwater and marine aquariums. Phosphate is a key nutrient that, when elevated, can fuel unwanted algae growth and disrupt nutrient balance, so regular testing helps you maintain healthy, stable water conditions.\u003c\/p\u003e\n\u003cp\u003eDesigned for hobbyists and advanced aquarists alike, this kit uses a simple colour comparison method to deliver accurate, reliable results with minimal effort. Monitoring phosphate levels regularly supports clearer water, less algae, and a more balanced aquarium environment.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300493586773,"sku":null,"price":10.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/phosphatetest_9cda5032-6ea8-4593-8aa1-a5805a1fa550.webp?v=1768961038"},{"product_id":"salifert-ph-test-kit","title":"Salifert pH Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert pH Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert pH Test Kit is a reliable and easy-to-use solution for measuring the pH level of aquarium water in both freshwater and marine systems. pH is a fundamental parameter that affects nearly every aspect of water chemistry, fish health, coral growth, and biological function, so regular testing helps you maintain a stable, optimal environment.\u003c\/p\u003e\n\u003cp\u003eUsing a simple colour comparison method, this kit delivers clear, accurate results with minimal effort, making it suitable for both routine monitoring and troubleshooting changes in your aquarium’s chemistry. Regular pH testing supports healthier livestock, more predictable water conditions, and greater overall stability in your tank.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300494340437,"sku":null,"price":7.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/phtest_49d88a80-c307-4f94-badc-fc23671ec19c.webp?v=1768961338"},{"product_id":"salifert-carbonate-hardness-alkalinity-test-kit","title":"Salifert Carbonate Hardness\/Alkalinity Test Kit","description":"\u003cp\u003e\u003cstrong\u003eSalifert Carbonate Hardness \/ Alkalinity (KH) Test Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Salifert Carbonate Hardness (Alkalinity) Test Kit provides fast, accurate measurement of KH, one of the most critical parameters in marine and reef aquariums. Stable alkalinity is essential for coral growth, calcification, and overall pH stability, making regular testing a key part of successful reef keeping.\u003c\/p\u003e\n\u003cp\u003eThis kit uses a precise titration method that delivers clear, reproducible results with high resolution, allowing you to easily detect even small changes in alkalinity. It is suitable for both marine and freshwater aquariums and is trusted by hobbyists and professionals alike for its reliability and ease of use.\u003c\/p\u003e\n\u003cp\u003eIdeal for routine monitoring and fine-tuning dosing regimes, the Salifert KH Test Kit helps maintain a stable, healthy environment for corals, fish, and invertebrates.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52300497584469,"sku":null,"price":8.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/carbonatetest.webp?v=1768961459"},{"product_id":"salifert-calcium-test-kit","title":"Salifert Calcium Test Kit","description":"\u003cp data-start=\"33\" data-end=\"362\"\u003eThe Salifert Calcium Test Kit is a reliable and easy-to-use water testing solution for monitoring calcium levels in marine and reef aquariums. Calcium is a vital element for coral skeleton formation, invertebrate health, and overall reef stability, so keeping levels within the optimal range is essential for a thriving system.\u003c\/p\u003e\n\u003cp data-start=\"364\" data-end=\"690\"\u003eThis kit uses a clear colour comparison method to deliver accurate and reproducible results, making it suitable for both routine maintenance and troubleshooting changes in water chemistry. Regular calcium testing helps you fine-tune dosing, support robust coral growth, and maintain a balanced, healthy aquarium environment.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52512389923157,"sku":null,"price":13.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/calciumtest_441b0a37-4c5d-431b-8f1a-19dd8e3f4e3a.webp?v=1770511041"},{"product_id":"reef-zlements-icp-ms-oes-saltwater-single","title":"Reef Zlements ICP MS \u0026 OES Saltwater Single","description":"\u003cp\u003e\u003cstrong\u003eReef Zlements ICP MS \u0026amp; OES Saltwater Single\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReef Zlements ICP MS \u0026amp; OES Saltwater Single is a comprehensive laboratory water analysis test designed specifically for saltwater aquariums. Using advanced ICP-MS (Inductively Coupled Plasma Mass Spectrometry) and OES (Optical Emission Spectrometry) technology, it measures a wide range of elements — from major components to trace and ultra-trace elements — with high accuracy and precision.\u003c\/p\u003e\n\u003cp\u003eThis detailed single test provides invaluable insight into your aquarium’s water chemistry, helping you fine-tune dosing, identify imbalances, and make informed decisions for optimal coral, fish, and invertebrate health. Ideal for hobbyists serious about water quality, it delivers professional-grade data that supports stable, thriving reef systems.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52867274441045,"sku":null,"price":58.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/msandoes.webp?v=1772558981"},{"product_id":"reef-zlements-icp-advanced-saltwater-test-1-pack","title":"Reef Zlements ICP Advanced Saltwater Test 1 Pack","description":"","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":53505413022037,"sku":null,"price":39.99,"currency_code":"GBP","in_stock":true}]}],"url":"https:\/\/marinefishshop.uk\/collections\/tests.oembed?page=2","provider":"Marine Fish Shop Online","version":"1.0","type":"link"}