Marineland Rite-Size Cartridge Refills (18-Pack, C - Blue)

These filters seem to keep the water pretty clear with minimal effort on my part. We use 2 at a time and change them about every 2 months with no issues. Easy to use, just rinse and install.

Replace filter once a month and I’ve had no issues with my 29 gallon tank. Have 5 snails to keep the algae growth down too. Minimal tank cleaning needed, just the monthly water swap and stone vacuum.

These filters are great! Works like company says.

Not bad.

Used for a personal in-house tropical fish tank. Liked the price -buying in quanity saves extra trips to the store for purchase. All that have been used so far were in perfect condition. Will probably order again.

Using the manufacturers recommendation, also just by looking at the water quality, its obvious these filters are doing their job. My fish love it thank you