6-Pack, Size B, Rite-Size Cartridge Refills

Just like the original one. Does what its required

Its the wrong size! It says size B but its actually size C. I have a filter that uses size C so its not a big deal but it should be what the product says.

I had another pump that didn’t work as well as I needed it to. I purchased the Marineland pump and these are the perfect replacement filters. The original brand and a better price than the pet stores. Thanks Amazon for a great deal. I will purchase again.

great colors and clear water

Works well

could not use wrong size to small

Exactly what I expected. Cheaper than our local pet store

I like my filter that why I buy it its cheaper then store

Awesome Find

Performs the exact function described. Works very well.