Aqua One Check Valve 4mm 2pk

Aqua One Check Valves 4mm 2pk ensure a one way flow for air pumps. Ensure a check valve is used whenever an air pump is positioned at or below the waterline of the aquarium.

Aqua One Check Valves 4mm 2pk ensure a one way flow for air pumps. Ensure a check valve is used whenever an air pump is positioned at or below the waterline of the aquarium.