READ this !!! sorry about the audio ....attn:will not work on multiple grill or screen intake AKA Volute screen intake you need the same intake you see on the video.this pump is 750watts if you run 24/7 you go broke but any way i already bought small one @ebay 150watts and run like almost the same .... male adapter,valve from home depot, bigger sump pump handles more water more air can produce... please dont copy these or your stupid enough
3 in 1 water circulation, aeration/oxygen,protein skimmer my next project ....

................why mine not sucking air?....................
problem:
a...you drill to big for tube connection / water still passing through...
fixed:
b... use teflon tape / silicon around the bolt thread
problem:
a...you drill to close to water outtake
fixed:
b...check the propeller turns / opposite side

multiple grills intake not going to work..period