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

Kept my tank clean for 2 months without changing the filters

It’s a great deal

Excelente

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.

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

Good price

Good Item

This is the first time weve used these filters and if they were not going to work we were going to give the fish away and be done with the aquarium however the filters work like magic!

Filters dont last long

I remember when you had to rinse and measure out nasty little bits of charcoal, fluff out and place the angel hair stuff and stick your hand into the tank to put it all together again. Especially compared that that, these rock. A 5-year old could do these. I will never, ever buy a system that doesnt have this sort of practicality built-in. Get them. You will like them..... so will your fish.