Not what I need at all! But thanks. I need a chart that states head flow heights. The tank I want to use them on is very tall and I want to make sure it will do its job! i.e. : at 0 ft it will flow 755gph, at 2ft it will flow 655gph, so on and so forth. I cant find the info on the dealer web page nor on any other sites. Its driving me crazy. Please help!