Review on 🐟 Tetra Whisper Bio-Bag Filter Cartridges: Easy-to-Use Solution for Aquariums by Kim Navarro

I received these cartridges to replace the cartridge in the filter of my Tetra ColorFusion 20 gallon aquarium kit which I have been using for half a year (much more than I would have liked should have). These cartridges are the right size and very easy to replace: just rinse and insert into the filter. Be sure to turn off the filter before replacing it. A day after replacing the cartridge, I can already see that the water is much cleaner, now I will change it every three months.