COSIBOA Cut to Fit Activated Carbon Filter Sponge - 2-Size Options (9.8"x9.8"x0.4" 3PC/36"x12"x0.4" 1PC) for Aquarium Fish Tank Canister Filters, Chemical & Mechanical Filtration (3)

FLEXIBLE ADAPTATION EFFICIENT CUSTOMIZATION Tailored design (9.8x9.8x0.4 inches/piece), easy to match various filter sizes, such as tank filters, external filter buckets and small aquariums, to solve the problem of irregular space adaptation. DUAL PURIFICATION FOR WORRY-FREE WATER QUALITY The activated carbon layer adsorbs odors, drug residues and harmful chemicals; the high-density sponge intercepts fish manure, algae and other physical impurities, synchronizing chemical adsorption and physical filtration. SAFE MATERIAL，LONG-TERM STABILITY Food grade activated carbon combined with gel-free sponge, no chemical additives, no release of harmful substances, suitable for freshwater/marine aquariums, turtle ponds and sensitive aquatic plant and animal environments. SIMPLIFIED MAINTENANCE AND LONG-LASTING DURABILITY A single piece can be used continuously for 4-6 weeks, and regular cleaning of the sponge can restore the filtration efficiency, reducing the cost of frequent replacement of consumables and lowering the burden of maintenance on the user. MULTI-SCENE COVERAGE ECONOMICAL AND PRACTICAL 3 pieces to meet the long-term replacement needs, compatible with fish tanks, ponds, aquariums and reef ecological tanks, cost-effective than traditional single-function filter media.