Under Gravel Goldfish Bowl Filter

The filter incorporates a cartridge of activated carbon granules to purify the water. The bowl is also aerated and biologically filtered as the water flows through your gravel. This under gravel filter is suited perfectly for a goldfish bowl. It is available in two sizes.

Large - The round base plate measures 5.25 inches or 133 mm in diameter. The activated carbon cartridge on this particular model can be refilled.

Small - The round base plate measures 4 inches or 10 centimeters in diameter. The activated carbon cartridge on this particular model can not be refilled.