<a href=showthread.php?s=&postid=9597572#post9597572 target=_blank>Originally posted</a> by AZDesertRat
I am bench testing pumps to prove or disprove that right now. I have a 1260 and a 3500 to test right now and am hoping to get my hands on others. I ran into trouble trying to test open discharge, 0' head flows though as my flow meter was exerting about 3.5 feet of head at all times. I am supposed to get a different flow meter today to see if that fixes the situation. If not I will have to go to a graduated vessel and time the flows. I have found the 1260 to pump very well so far but it does draw more wattage then the 3500 at the same flow rate and head from what I have seen initially. I haven't been able to test a 1262 yet. I still seriously doubt a 1262 and 6500 are similar, OR or Eheim neither one would err that much.