Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? How to drain a large pond to do a repair? Ideas?

I did use a 45 elbow at front and back of dam to relieve pressure off the couplers but not sure this was necessary. I only used 2 tee sections - one for top of dam where ball valve was attached and one at pond end of siphon for my 5' capped sticks with holes drilled per Rex to prevent fish or turtles from clogging suction. The rubber couplers may allow one enough play not to use elbows, I just didn't want to risk it. All those parts [pvc, elbows, couplers] are so cheap in the 2" size I didn't have the cost issue of requiring one to cut corners and take chances.