Tetra Whisper Aquarium Bio-Bag Filter Cartridges, Medium, Disposable Unassembled 4 Count (77865)

Tetra Whisper Bio-Bag Disposable Filter Cartridges keep aquarium water crystal clear and remove odors and discoloration. The dense, dual-sided mesh catches debris and fish waste. Ultra-Activated carbon absorbs odors. Use these replacement filter cartridges in your Tetra water filter – each package is color-coded to make it simple to remember which size to purchase. These replacement filters are assembled and ready to use for your convenience. Clear water made simple. Rinse Tetra Whisper Bio-Bag Disposable Filter Cartridges under cool tap water to remove carbon dust. Open the lid of your filter and insert the Bio-Bag cartridge into the filter. Replace a clogged Bio-Bag filter cartridge when there is reduced water flow out of the filter. For best results, change your filter cartridge monthly or sooner if needed. Size medium. Choose the small size filter cartridge to fit the Tetra Whisper 3i Internal Filter; choose the medium cartridge to fit the Tetra Whisper PF10 Power Filter, 10i Internal Filter and Reptofilter 90 GPH; and choose the large cartridge to fit the Tetra Whisper 20, 30, 40 and 60 Power Filters and 20i and 40i Internal Filters.

REPLACEMENT CARBON FILTER: Keeps aquarium water crystal clear – removes odors and discoloration
CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste
FITS TETRA WHISPER WATER FILTERS: Color coded to make it simple to remember which replacement cartridge size to purchase
CONVENIENT: Replacement filter cartridges are fully assembled and ready to use
USAGE: Change monthly or sooner if needed