About This 【XBBWMRS Large Aquarium Filter Cartridges 100% Compatible with Whisper Filter and Ready to Use】: Our 6 pack of large fish tank filter is suitable for whisper bio-bag Filter 20i 40i IQ20 30 45 60 and PF20 30 40 60, size: 6.22'' X 4.72''. Good idea for any fish tank or aquarium (10-30Gallon 20-40Gallon 30-60Gallon). 【4 in 1 Fish Filter Cartridges, 360° Filtration, Keep Aquarium Fresh and Fish Healthier】: ① Fish tank filter cartridge is wrapped by dense double-sided mesh to capture maximum debris and filter debris and fish waste. ② Super activated carbon quickly removes odors and yellow, leaving the glass of your aquarium free of buildup and keeping the fish tank's water crystal. ③ NEW aquarium filter media Zeo-lite, work to keep PH balance of the water while also removing odors and discolorations. 【NEW LOOK, SAME FUNCTIONALITY, ENSURE FIT FOR WHISPER BIO-BAG FILTER】: ① No messy assembly required, out of the box, and ironing wrapped edge, not easy to leak carbon dust. ②The built-in 12-grid ABS frame distributes zeolite and activated carbon evenly over the inner surface so that each water flow is fully filtered, leaving no place for impurities. ③ABS plastic edge, more suitable for whisper filters, more durable and not easy to deform. 【New Filter Media Zeo-lite, Quickly Remove Ordors, Yellow, Deodorization to Keep The Fish Tank's Water Clean and Clear】：xbbwmrs replacement filter cartridge not only increases the amount of activated carbon on top of the original but also places a new deodorizing filter materials - zeolite, the combination of two filter materials to eliminate odors faster and give your lovely friends a healthy, fresh living environment. 【XBBWMRS Fish Tank Filter Cartridges Services】： If you have any problem understanding or using our xbbwmrs replacement filter cartridges, please don't hesitate to tell us and we will try our best to help you. After many tests by our engineers found that the adsorption of activated carbon and zeolite is limited, it is recommended to replace it in 2-4 weeks to keep the best effect.
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