Hey Stan, your sure not wasting any time getting things done.
You could reduce suction at the opening of your 1&1/2" pipe by putting a T on it and also drill lots of holes into the T, then cover it in screening, this reduces the intake suction at any specific point and allows the screen to stay cleaner, also don't put the screen tight to the inlets on the T, I have done this to my 2" siphon inlets that supply water to my pond.
As long as you have some shade for the Trout that should keep the stress down on them.
What do you think of a manifold of sorts... Like 6-8 1/2" holes over the length of the deepest portion.
I plan on putting a deck over the pond with a 4x8 opening. Then building a small pole building over the whole platform. This will give them some hiding spaces. Protect them from birds and other critters. Also give a nice spot to feed them even in winter.
I just wanted to see how well fish do in it before the whole build out... It would be a PITA to find out something minor is wrong after a building is built.
