2 pieces per pack
Replaces many air stones in common box filters and undergravel riser stems
The Power Agitator
Flexible, porous air tubes with large surface area
Provide powerful aeration and water agit...
The Marina 50 air pump combines high performance output with quiet operation. A reliable source of air for increasing water movement and turbulence for proper oxygenation, and can also be used to operate items such as air stones, ...