Pond Boss Forums AERATION Systems questions This CANT be right can it???

I've had trout alive in a clients pond with 78 degree water temps. 3 bottom diffusers and a large surface agitator had O2 levels at saturation.

I've had trout in my pond die at mid 70 degree water temps.

My pond is 18' deep.

One year I bought a low temp t-stat and only ran the bottom diffusion aeration system when ambient temps were below 70�F at night. Didn't do a durn thing, in fact the trout died even quicker because the pond was within a few degrees water temp too to bottom, and the O2 levels weren't high enough for the trout. In other words, aerating only at night did nothing.

Next year I didn't aerate at all, and the pond set up a thermocline. The trout lived a month longer than the previous year, but they still all died around July 4th.

I would move the diffusers to 1/2 the max depth of the pond, and run them 24/7 and hope that you keep your O2 levels up enough for the trout to survive.

Now I look at trout as October thru mid June fish.