Hi Scott

I've not experienced this before...it certainly looks red and not brown...if brown I'd suspect decaying phytoplankton following a copper treatment or some other major kill event [weather related, etc.]. I'd email a photo of this to Cody, Ewest, and Lusk...I know there are red algae and IIRC they are typically considered bad...but that's in the ocean. I'd make this a priority - get with these guys ASAP.

Do you have aeration yet?

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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