you might also want to airarate in the winter that will keep the O2 levels up and should keep an area free of ice.
they are doing it in a few lakes now to prevent winter kill.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
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