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

Super crystal clear water when I use one of each. Never have any issues with the water quality in my fish tank.

Ive used this brand for over a year and like the convience of ordering at Amazon.....and the protect is mess free.

We have an unorthodox fresh water tank for our beta and mud turtle and these filters work amazing at fighting all the blue algae from the tons of natural light we have in our house!!

This was exactly what I needed!

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.

Excelente

Good Item

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

Everything was fabulous

As described