Listen to our mentor, Mr. "it all depends" Cody.
Some 10 years ago I was seeking advise for a DIY aeration system and he recommended the same Gast 1/4 rotary vane pump as posted above.
First few years I ran only about 8 hours nightly, but after a fish kill it now runs 24/7 with no pressure loss!
BTW, he sells these units but won't advertise on the forum - he's a good guy.
Last edited by george1; 03/26/12 05:46 PM.
