Eric - Thanks for the feedback. Got the manual online from your earlier post on the thread "Economy system any good?". Wish I had had access to it before all this started. I even tried running the system without being hooked up to the air hose/air stones and it seemed to make little or no difference in the operating temperature.
Regarding Ken's question, I have power to the pond's edge with the pump mounted on a bridge support that the power outlet is located on. Total power cord length from the pump to the outlet can't be more than 12-18" although I have not measured it exactly. I am certainly no electrician, but I can't imagine that causing a problem.
Thanks again for all the assistance.
