Marineland Rite-Size Cartridge Refills (6-Pack)

The carbon pellets barely fills half of the filter on the backside. My tank is pretty clean and I still need to clean or replace the filter every two weeks.

Great product for a great value. Easy to use.

Love them

Filtration

I bought these for my Marineland 5 gallon portrait aquarium

Great product for a reasonable amount of money!