I live in Nova Scotia Canada and have a five year old pond 260� by 110� with the deepest spot about 24� and an average of 15�. The water source is a spring that stops running in June and starts again in Oct. I have been putting about 150 speckled trout in every spring and fishing them out by the end of year two at about 4lbs. I don�t know much about ponds but I know that in late July we usually loose about a dozen or so.

Thinking it was the oxygen level in the water or a stratification problem I installed a 1/3 hp submersible pump 6� under a 4� x 4� raft in the middle of the pond and just let the water shoot straight up out of the 1� line and land on the raft 24/7. The water is very white so I think I am getting oxygen into the water and de-stratifying it at the same time, This year just one dead fish and it had a hole in it. Dam birds!
Ok, that�s the background.
My questions are, Does my little pump do what I think it�s doing? Are there any other things I should look out for in my new pond? Anything not to do.

Thanks all�..