We are putting in a new pond and I have multiple ways of doing the spillway but I really like the siphoning spill way.
I just priced 10" pipe and 8" pipe and the difference in Tee's/22.5s/45s/and pipe are drastic as in a 10" tee is $350 and an 8" is $60, all other components are the same so my question is what about 2 - 8" Siphoning spill ways instead of one, the gravity flow charts show it would be slightly more volume with 2-8" but the price difference is astronomical.
It is also my guess that 3034 Green sewer pipe can not be used for a siphoning Spillway because of the velocities and pressures on the end of the pipe in full siphoning mode? 10" 3034 pipe is very economical compared to 8" PVC
Also I don't see people using anti seep gaskets in these systems, is there a reason why?
