Marina Slim Filter Carbon Plus Ceramic Cartridge, 18-count

These have helped me so much. I have an African clawed frog. She is picky about filtration. And makes a ton of waste. This filter is quiet and allows for a lower water level. I like that it’s skinny too. I really love these refills they are easy to use as well. Just slam them in and you’re good to go!

My filter uses two cartridges at a time; I can change them both six times and at this price it's not very expensive to do so. To me, this 12-count package seems like a very good value.

Perfect

Good product, good price

Great filter. Water stays clear for 2 weeks,

Great

Filter is easy to use in our 5 gallon betta tank. You can replace one cartridge at a time to keep your nitrogen cycle even. I need to replace one cartridge about every 3-4 weeks. Be sure to rinse the filter first—otherwise you’ll get activated carbon black runoff into the water.

I couldn't find these in any store here in anchorage. They are super simple to install and work as they should. Help keep my 5 gallon tank clean and fit perfectly tly in my filter.

Fonctionne bien sure aquarium eau salée

Très belle économies c'est exactement la même choses que j'avais.

Buen producto pero lo ideal es cazarlos en oferta, me duran 3-4 meses en el acuario siempre y cuando no alimentes con mucha comida a los peces.

Guess what? So, I used to go through filters like crazy with my old brand, having to switch them out every 3 days because they were always full. But ever since I switched to this brand, I haven't had to change it nearly as often. I got this brand about 2 weeks ago, and just changed the filter today.

ok