Apec Ro membrane after 5 minute flush, Oahu Hawaii, inlet water 182 PPM, after stage 123, then Ro membrane 10 TDS. The third photo is the 5th stage carbon filter washing, the next photo is the 6th stage alkaline filter, after 5 minutes of washing there is still a white cloud. With an inlet pressure of 55 psi, the water to waste ratio is nearly 1:1. I also installed an Aquatec ERP-500 permeate pump to save on waste water. HawaiiSplitAc.com
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