Marina (3 of Each) Slim Filter Carbon Plus Ceramic Cartridges and Zeolite Plus Ceramic Cartridges

Refills for the slim 20 filter, new set up and the 4 filters seem very efficient, fast water clearing and now maintaining a good water quality. Very satisfied. Nice to get an very quick and early delivery. Thanks.

Exactly what I needed! Good value.

Got this because it was supposed to be 3 of each type but was just 1 type and 6 of them

Easy to install

As the picture shows, I received 3 packages of the Bio-Carb cartridges with the Zeolite nowhere to be found. I didnt even notice at first until I went to use them later. I started to open the one and it dawned on me. Kind of annoyed because the only reason I bought the set was that it supposedly included both Bio-Carb and Zeolite which isnt easy to find in 1 order. I should probably make my own filter, anyway. As far as quality and effectiveness, theyre totally good.

These are perfect for my small fish tank at work that I have about six Fish keeps it clean for approximately six weeks

This was exactly what I needed!

Really love this filter for my betta on my 5.5 tank. Runs very silent!

Easy to replace, works for 2 weeks then needs replacement. Works well

Work great. Keep water clean and clear. Good deal on how many there are in pack.