I was just reading about this in an old issue of Water Gardening, and
apparently it does. ~ jan

How old? AlgaeFix is a newer product, they have long made Algae
Destroyer which works by a different mechanism.

jay

I'll have to check, but I think it was last fall's issue. I'm pretty sure
it said AlgaeFix. ~ jan

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(Do you know where your water quality is?)