Esctabalt 16 Count Large Filter Cartridges Compatible with Whisper Bio Bag Filters, Large Aquarium Filter Cartridge for Whisper 20i 40i, IQ20/30/45/60, PF20/30/40/60 and Repto Filter

【100% compatible with Whisper Filter 】:Our filters are perfectly compatible with Whisper 20i, 40i, IQ20/30/45/60, PF20/30/40/60 and Repto Filter in sizes 7.1 "X 5.1" for 20-60 gallon aquariums

【Triple efficient filtration, clearer water quality】 : Double-layer high-density filter effectively captures the residue and fish excrement in the aquarium; Super strong activated carbon quickly remove odors and yellow substances, make the aquarium glass without scaling, keep the water crystal clear, and maintain the health of the water quality

【Ready-to-use, easy installation]】: no need for complex assembly, out of the box. The edge of the filter element is reinforced to prevent the leakage of toner and ensure a clean and tidy process

【Durable design, durable stability】 : Built-in ABS frame, uniform distribution of activated carbon and filter media, to ensure that every drop of water is fully filtered. ABS plastic edges are more durable and resistant to deformation, making them a perfect fit for Whisper filters

【Intimate service, regular replacement suggestion】 : We provide full after-sales service, if you have any questions, please feel free to contact us. It is recommended to replace the filter element every 2-4 weeks to maintain the best filtration effect and provide a healthy and fresh living environment for your fish