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

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

Easy to install

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!!

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

Everything was fabulous

Kept my tank clean for 2 months without changing the filters