IMHO In addition to the mentioned electrical demands and cooler water temperature I don't think it is a matter of additional benefits. I think it is a matter of are the benefits of running it 24/7 worth the extra electricity. I don't have cold water fish and want the maximun benefits of aeration. So I come down on the side of full time running. I have also read somewhere that turning it on and off, even once per day, is harder on the carbon blades, motor, etc. than just letting it run.

Bing


"I love living. I have some problems with my life, but living is the best thing they've come up with so far." � Neil Simon,