Luft Pump 6-3/4" x 3-1/2" x 3"

High pressure air pump great for large or multiple aquariumsAdjustable rheostat controls airflow to suit your aquarium needsUse to oxygenate water and improve gas exchangeThe Luft Pump delivers 7.0 psi against water pressure, making it an excellent choice for ponds. Its heavy rubber diaphragm cannot be damaged by back pressure; this means if an airstone has not been maintained, the diaphragm won't be damaged. The adjustable rheostat increases air flow by regulating electricity, not by blocking air flow, allowing more efficient, economical performance. Can be used with multiple valves or T-connectors for multiple devices. Quiet operation. Includes replaceable airline filters and airline clamp. 6-3/4" x 3-1/2" x 3". For aquariums up to 90 gallons.Please click on "More Information" for instructions for replacing rubber diaphragm.