http://www.remlingerfishfarm.com/windmills.html
Here's a link for windmills

I saw in one of the prior posts talk about barley strawfor reduction of
algae. In my 1/2 acre pond it has seem to work very well I also use copper
sulfate once a year to make sure I don't have any problems. Keep us
informed and good luck.


I've been prowling through the archives here looking from some good
advice on aeration of a large pond.

I live in central Texas and just finished digging our pond about two
months ago. When full, it will be approximately 2 surface acres and
contain (my best guess) a little over two million gallon.

[snip]
The average depth will be 9-10 feet with some low spots in the 11 foot
range.

Your best guess, is way too low
2 acres is 87120 square feet, Assume an average depth of 10 feet (let the
9
and 11ft spots even out)
That gives us 871200 cubic feet of water. 1 cubic foot of water is 7.48
gallons.
That gives you approximately 6.5 million gallons. About 3 times more then
what you estimated.

Any kind of mechanical method of circulating the water is going to draw a
lot of power, to circulate 1 million gallons of water a day, you'll need a
pump capable of about 41000 gallons an hour, or 700 gallons per minute. A
large air pump, in the 3/4 to 1 hp range is likely to also be energy
thirsty
as well.

Depending on how much wind you get, I've seen some windmill powered
airpumps
that could help you save some money. Maybe one or two windmills might do
the
trick.

Snooze