{"product_id":"red-sea-100-micron-felt-fine-polish-filter-bag","title":"Red Sea 100 Micron Felt Fine Polish Filter Bag","description":"\u003cp\u003eThe Red Sea 100 Micron Felt Fine Polish Filter Bag is a high-quality, reusable mechanical filter sock designed to provide ultra-fine filtration in sumps and filter systems. Its dense felt walls trap very small particles, detritus, and suspended waste — polishing already-clear water to a crystal-clear finish. At 26 cm long with a standard 4″\/10 cm ring, it fits both dedicated Red Sea filter sock holders (e.g. REEFER, MAX-S) and any standard 4″ shaft holder. Ideal for mature aquariums with low particulate load or for use as a final polishing stage after coarser filtration, this 100-micron felt bag helps maintain water clarity, reduce organic waste load on downstream filtration (like skimmers or chemical media), and supports a cleaner, healthier aquarium environment.\u003c\/p\u003e","brand":"Marine Fish Shop Online","offers":[{"title":"Default Title","offer_id":52014771142997,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2278\/0501\/files\/100micronfeltfinebag.webp?v=1764703830","url":"https:\/\/marinefishshop.uk\/products\/red-sea-100-micron-felt-fine-polish-filter-bag","provider":"Marine Fish Shop Online","version":"1.0","type":"link"}