12 Packs Large Filter Cartridge For Tetra Whisper Bio-Bag Power Filters 20I,40I/IQ20,30,45,60/PF20,30,40,60 [Compatible with for Tetra Whisper filter] The size of filter out cartridge 5 in L x 6 in W. It is tournament excellent for large tetra whisper bio-bag outdoors clear out PF20, PF30, PF40, PF60, for whisper external clear out IQ20, IQ30, IQ45, IQ60, for whisper 20i & 40i within filter. Good principle for Tetra Fauna ReptoFilter 50 gallons (125 GPH). [Superior Filtration Performance] Made of dense double-sided improved cotton and large activated carbon, it provides triple water filtration that gets rid of 99% of filter out particles and fish waste, holding the water clear and wholesome and advertising and marketing wholesome fish growth. [Replace Filter Cartridge Regularly] To ensure optimal cleanliness, we promote replacing the aquarium filter out cartridges every single 2 to four weeks in your fish tank entails 12 pack aquarium clear out cottons. Colour:As Shown Material:Composite Materials Package Contents: 12 * Large Filter Cartridge Only the above kit content, different products usually are not included. Note: Light mirrored image and diverse displays can cause the color of the thing in the picture barely diverse from the real thing. The length allowed error is +/- 1-3cm.