I was wondering if anyone had ever built their own machine? I have talked to a few people who said that they have done it and that it worked out great. right now im building one: 525 gallon tank 6.5hp trash/water pump 3" pump with a 3" suction hose. the pump feeds 2 2" jets and one 1.5" discharge hose reduced down to a 3/4 nozzle Does everything sound like it will work out okay? also i just got two estimates the other day 15000 sq ft @ .09 cents = i got that job 1 acre = haven't bid on it yet, I was hoping someone could give me some advice? I thought about .08 cents per sq ft and i would not include fertilize in the mix but would come back later and fert.