Currently my vent is about 4 inches above normal pool. I want the siphon to start faster but I am worried that if I place the air vent below normal pool the air trapped in the system wont start the siphon after the water line goes above the 10" pipe. Another question I have is most engineering sites want the pipe below pool with holes drilled into the pipe until just about normal pool? What are the holes intended to do? Break siphon slowly?

Last question... If the 4" vent is submerged before the water line is over the top of the 10" pipe will it siphon at all? Or will it still function as a normal drain until its completely filled.

Thanks guys.

Last edited by Mikecr250; 06/08/13 03:33 PM.