10 Pack Medium Filter Cartridges for Tetra Whisper Bio-Bag Filters
10pcs Large Assembled Replacement Filter Cartridges for Tetra Whisper Bio-bag Filters: Unit Size: 5.1× 6.7. This filter cartridge is compatible w/ Tetra Whisper bio-bag external filter PF20, PF30, PF40, PF60, Whisper external filter IQ20, IQ30, IQ45, IQ60, Whisper 20i & 40i internal filter & Tetra Fauna Repto Filter 50 gallons (125 GPH).Front Green + Back White Dense Dual-Sided Mesh:; The filter cartridge is uncomplicated to distinguish front & back. Easy to install & to use, only rinse w/ clean water or w/ aquarium water, the rare green mesh design partly helps remove excess phosphate from the water, keeps the aquarium system clean & healthy.The 4-Stage Filtration helps keep water crystal clear & healthy: The filter cartridges is made of dense dual-sided mesh, better thickness provides better filtration,over 40g ultra-activated carbon & processed zeolite, which can effectively filter & absorb impurities for clean water.New, I opened package to display in post.