We had a 1 1/2 acre pond that could never hold water. We recently had it cleaned out and increased to about a 3 acre pond and paid thru the teetch to have it lined. I also had a water well drilled and a 3hp submersible pump installed. We ran a 4 inch pvc line from the water well that was trenched to the middle of the pond elbowed up in the middle. Although the water is waterfalling out of the 4 inch line (and not shooting up in the air), it is incredible how fast it is filling the pond -- not much areation, but a tremendous amount of water.

Does anyone have any thoughts on reducing the 4 inch line above the water level to 1 1/4 or something and then T -ing it off and installing the nozzels described in some other posts?

concerns are:
1. will reducing the line cause any problems with the submersible pump?
2. any thoughts on if this will work and what reduction i should make to get some good areation.