The General Hydroponics Dual Diaphragm air pump is extremely quiet and the only air pump in the world manufactured exclusively for hydroponics systems. This high output pump has four adjustable 1/4" outputs that can be teed off to power up to twelve air driven hydroponics growing systems such as the WaterFarm. In addition, growers who use a Dual Diaphragm air pump can use it to reliably oxygenate their reservoir with air stones. 3 psi, 320 gph (20L/min)
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