Fangrui Product Details Our Medium Filter Cartridges Are Uniquely Designed To Work Perfectly With For Whisper Pf10 Power Filter, 10i Internal And Reptofilter 90 Gph. Primarily Intended For Use In 5-10 Gallon Fish Tanks Or Aquariums. This Ensures Compatibility And Effectiveness In Keeping Your Waters Clean And Clear. Featuring A State-of-the-art 5-in-1 Filtration System, Our Product Makes Clear Water Simple. Dual-sided Mesh Works Hard To Catch Debris And Fish Waste. It Contains More Activated Carbon For Long-lasting And Thorough Filtration. It Also Includes Novel Aquarium Filter Media Zeo-lite And New Filter Media - Ceramics, Which Absorb Heavy Metals And Improve Water Taste. Despite Significant Advancements In Our Product Offerings Including More Activated Carbon And The Introduction Of Two New Filtration Media - Zeolite And Ceramic, We Strive To Maintain Affordability. Our Focus Remains On Providing A Cleaner, Fresher Space For Our Wet Friends Without Burning A Hole In Your Pocket. Our Medium Aquarium