HELP dealing with mustard algae!

[PoolDoc]

+ How long have you had the algae?

+ Have you had problems with this before, in previous seasons? (I haven't re-read your thread -- apologies if you've already answered this)

+ Typically I suggest going 2 - 3 days after ZERO algae appears anywhere. But mustard algae clings to tiny crevices and holes, somewhat like black algae, and then re-emerges. SO you might want to go a little longer.