Review on Aqua-Tech EZ-Change #3 Activated Carbon Filter Cartridges | 20-40 / 30-60 Gallon Aquarium Power Filters | 3 Pack by Kate Gagnon

Apparently this is what most Walmart stores sell at the time of writing. The fact that the rear filters are hanging is because I've had many types at different prices. All the expensive ones I've bought pumped gallons of water onto my floor like Fluvals did, and so did the cheaper Marineland bio wheel. I haven't had this problem with this knock on wood. Good suction of the circulating water. I have 20-40 on a 15 gallon tank. My 6 betta tanks also have cartilage internal filtration. The noise level is slightly higher than, for example, a Fluval or Marineland Biorad. I just bought an internal filter from Marineland to see if it would help improve water turbidity. I will not use this particular filter 24/7. This is the internal polishing filter canister (submersible).