Will 15ppm take care of it if it was Brown algae? That is why I was assuming 30 ppm? If you don't think I have brown algae I will shock at 15 ppm. I just don't want brown/ mustard algae as I had a full breakout two years ago.... what a mess.

Thanks for the reply Watermom. I will.wait to see what anyone thinks about brown algae or not?

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