Jeff your water temps are low enough in mid to upper 60s I guess...imagine your DO levels were just fine provided you didn't treat significant areas of the pond with copper. Try to relax, back off the feeding during major weather shifts, [anticipate low feeding at those times], and resume when the weather stabilizes. You worry too much, amigo...enjoy your pond!

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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