Cary - Thanks for a very informed opinion....as I suspected, the aquarium air pump was not putting out enough air for the length of line and water depth....which makes me wonder how in the world Christopher Potts got it to work in the referenced article. I sure couldn't.
Next problem....I noticed you are with Vertex, so I figure you have a vested interest in this topic anyway. I assume you have read the other posts regarding the GAST pump under the topic "Will this pump work?" According to the specs which can be found at
http://www.gastmfg.com/pdf/rotvane/0532_1032_1532_series.pdf it is 1/10 HP, and rated at 10PSI and 1.5 CFM. If you don't mind, what would be your professional opinion on this pump for my application. As mentioned in the first post, I have a pond of approx 1 acre, max water depth of 12', and an average of about 6' which translates into about 6 acre feet of water.
You mentioned a new 1/3 hp compressor by Brookwood....how would it compare?
And, you raised a whole new set of issues with you comments regarding under-aeration. Call me stupid, but I just figured any aeration would be better than none at all.
One other item....for anyone out there. Back to the GAST pump that has been highly recommended in some of the other posts. I noticed on the GAST homepage that there is a local dealer so I checked to see if it might be a stock item I could pick up locally. Turns out it has to be ordered and the MFSRP was well over $300....which makes me wonder about the $40 price mentioned so prominently. Can't help but wonder if it is the same thing or not. As you can imagine, the lady on the phone was stunned when I told her what the going internet price was.....assuming we are not comparing apples and oranges here.
