What I have found out further is that I have to factor in the length of the horizontal pipe and the amount and type of elbows (90/45 etc) all of which contribute to calculating head pressure, in addition to the vertical distance. So now my new calculation means I now have to cater for a 25' head pressure. I am looking at the Iwaki MD55RLT, Blue line 55HD or Mak-4 pumps for this. Anyone have any specific experience with these pumps? I know that the Blue line and Mak-4 pumps claim to be Iwaki knockoffs. Are the Iwakis that good?? Thanks again
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