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

Performs the exact function described. Works very well.

great colors and clear water

Works well, good value

Great price works great

could not use wrong size to small

Great

These filters keep the watter clear and my fish happy

have used them before and will continue to use them in the future

Muy buena calidad y pronta entrega

Fish died a few day after install