...update.
The pump is up and running on a temporary basis until I decide on a housing. It was a little noisy but it quited down a lot after it was hooked up to the system. Now I can't even her it running from the deck, approx 30' away. It runs at 230v and consumes 1.3 amps, that gives it an effective rate of 300W, or $0.03 per hour at $0.10 per kilo-watt. It runs at 4.5 psi supplying 2 - 9" diffusers. The pump housing gets rather hot especialy the exhaust manifold, but the motor is luke warm. I just didn't expected that much heat at 4.5 psi.
And now the bad news...
A day before hooking up the pump, I was doing that 15 min. thingie useing my 25 gallon shop compressor, slow pumping about 4 tanks a day from 120 psi down to 0 psi(don't know how many cubic feet that would produce at 4 psi), then for whatever reason I pumped 3 tanks at night (from 20:00 till midnight... the next day desaster! dosens of catfish dead and a few bluegills. I guess my pond was in a worst shape than I thought. Anyway, I pulled 4 wheelbarrows of cats out of the pond and buried them in the garden in a shallow 2' x 30" ditch. Maybe I can get a good garden next year so it won't be a total waste. This is the last load when I took this picture. The other once were full to the bream. What a shame.
