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 (1)

1.【 PRECISE SIZE FREE CUTTING 】 Adopting 36x12x0.4 inches standard modular design, support scissors/craft knife to quickly cut to fit any size filter (compatible with 80%-95% of commercially available canisters), 0.4 inches thickness to perfectly match the common water flow channels, say goodbye to the embarrassment of the traditional activated carbon block is difficult to plug in. 2.【 ALL-WEATHER STABLE OXYGEN SUPPLY 】 The patented microporous ventilation technology enables the carbon layer to maintain 200-300g/m³ continuous oxygen transmission, even in the closed filtration system can maintain the oxygen demand of the aquarium and sensitive fish, and the measured dissolved oxygen is increased by 15%-20%. 3.【 TRIPLE STEREOSCOPIC ADSORPTION SYSTEM 】 The innovative honeycomb sponge structure is equipped with modified activated carbon particles, with a specific surface area of 1200m²/g. Through the triple mechanism of physical interception + chemisorption + biodegradation, it can efficiently remove ammonia nitrogen (90%+), nitrite (85%+), heterolor odor molecules and residual chlorine, and the adsorption rate of heavy metal ions exceeds 70%. 【LONG SERVICE CYCLE】 After 6 months of continuous use in 500L water body, the activated carbon activity retention rate is still >65% (common carbon block only 3-4 months), with removable snap design, support for individual replacement of activated carbon layer, maintenance costs reduced by 40%.