The BP-1530 Booster Pump is designed for use with all GrowoniX water filters 600 GPD and under. The GrowoniX BP-1530 Series Booster Pumps allow for the full potential performance of the RO membrane to be acheived—with only 35 PSI of incoming water pressure. The perfect solution for those with low feed water pressures, and those who want to receive the maximum performance from their GrowoniX water filter. Growonix BP-1530 Systems Features: Pressure Switch Adjustable Internal Bypass