I'm thinking of setting up an aeration rig for my 1/2 acre pond with the deepest part at 15' max but planing on installing 9" fine bubble membrane disc diffuser about 2' above as not to disturbe the mud at the bottom
The pond was built 4 years ago in a valley, draining about 60 acres, not a spring fed.
After reading countles posts here, as well as sales websites, I came to the conclusion that rotary vane is what I need. I'm looking at a couple GAST rotary vane 1/4 HP - one for $90
http://www.surpluscenter.com/item.asp?UID=2007070723333121&item=4-1540&catname=air and another for $375
http://www.drillspot.com/products/35791/Gast_0523-101Q-G582DX_Vacuum_Pump The $90 cought my attention. Will I be getting what I pay for with the $90 pump or is this my lucky day. The specs are similar though.
Any thoughts will be much appreciated.
