Kucbraly Medium Aquarium Filter Cartridge for Tetra Whisper Bio-Bag Power Filters, Medium Replacement Filter Cartridges for Tetra ReptoFilter Cartridges Aquariums Item Description ?Medium Aquarium Filter Cartridges?Kucbraly fish tank filter is design for Tetra Whisper Bio-Bag filters 10i/IQ10/PF10. Medium size replacement filter cartridge fits for TetraFauna ReptoFilter 20 gallons (90 GPH). ?Replacement Carbon Filter?Filter cartridges for aquariums filled with ultra-activated carbon, ready to use disposable single packs remove waste particles, odors and discoloration, leaving the glass of your aquarium free of buildup. Its s sturdy frame with grid which make the activated carbon evenly distributed, keeping your tank water clear and healthy and looking better than ever. ?Easy Installation?Replacement filter cartridges are fully assembled and ready to use. Simply rinse the replacement filter cartridge under cool water to remove carbon dust, align the cartridge bottom key slot, insert the filter cartridge into the filter chamber. ?Fish Tank Filter Cartridge?Dense double-sided mesh to capture maximum debris and filter debris and fish waste to keep water crystal clear. The-packages are color-coded, making it easier than ever to remember which size to purchase. ?Quiet Aquarium Filter?The adsorption of activated carbonis is limited, for optimal performance, please change approximately every 2-4 weeks for cleaner water and healthier fish. Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return within 7 to 21 days from delivery date but product should be in original position and not in damaged condition,the return shipping charges will be buyer responsibility