I have looked at charts and they give the answer based on one foot per minute velocity in pipe or tube. How does that translate to 90lbs. of pressure? Can someone just give me an approximate volume so I can figure out how much water (over time) I am adding to my swimming pool every day. I think I may have a leak and I want to decide weather it will be more feasible to excavate the lines or keep filling it daily until the season is over. Thanks for your simple answer.