I have not tested the overall performance of the unit but I am currently using a 3/8" OD x 1/4" ID hose to add water to a 5 point aquaponic tank circulate . a system I built that delivers about 40 gallons per hour. The pump was fitted with 1/2" tubing and dispensed much more water than the 1" downspouts could handle BUT this is good news as far as the pump can perform when needed. I love this pump and would recommend it.
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