Sullpond, glad to see it worked for you, I agree when the money isn't there you make due with what you have.
Last summer I did the same thing, I put a submersible pump I had on a small platform to keep it off the bottom, and attached a pipe to it. I had it run only at night to help cool, and aerate.
This year I have a small Linear compressor aerating which uses alot less power, but again use what you got when funds are low.
good luck.
