Well with a 14X12 pond you got 168 square feet of surface area. That's a
lot. One problem you'll want to watch for and I doubt with a pond that big
you'd see it anyways is if the power is off for a week and your pond is very
stagnant. A bacterial film will start to form on the top surface of the
water and interfere with the oxygen transfer.

Now like I said if you have 25 full sized koi and it's 110 outside you might
have issues.

The best way to know how you are doing is to go and buy an oxygen kit at
your local pet store or buy one online at:

http://www.drsfostersmith.com/produc...=6&pCatId=4565

Sam


"Szpond" wrote in message
...
You
have plenty of surface area for O2 to be absorbed.

Sam,
So I don't have to worry about them? How long can they go without
aeration? I
was a nervous hen, stirring water, using the leaf blower, etc. etc.
Thanks,
Cathy