I am of the opinion that 1 diffuser with 1/4 hp gast compressor(can I assume rotary vane?) is very adequate for 3/4 acre and 12' depth. What am I missing here? If the gast model # is provided, then the amount of air being produced can be determined. What did your suppplier of the system have to say re: your issues?
Mark, you keep saying that vis. is 'about' this and that. if you are eyeballing, it can be very deceiving. Have you actually measured the vis. and determined if the color is due to staining, or algae bloom? The experts will be able to see if the pond is stained or has an algae bloom if you post photos. Get a white coffee cup on a string and measure how deep it disappears.


Last edited by burgermeister; 06/14/10 06:54 PM.