Checked the water temp in the deepest hole(14 ft) and it was 64 degrees, at the surface it is 70. So the water temp should not be causing the trout or hbg any trouble. However, we started the aerator up which sits in the deepest hole and we noticed a very smelly odor. We had it turned off during the hottest part of the summer(June, july and part of August) we are seining this wknd.