Aquascape AquaSurge 4000 Pond Pump. AquaSurge 4000 91019 3,947 gph 18.5 ft. 215 / 1.82 1.5" MPT 1.5" - Rotational Ball Output. The Aquascape AquaSurge 4000 is a versatile water feature pump, featuring both the power and the energy-efficiency that you've been searching for.
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