So, will the Polyquat 60 kill mustard algae? I was under the impression that it will not kill present algae, but help keep algae away if you use it, and don't already have algae?

If so, does anyone know how much I would need to use to treat an 11,200 vinyl inground pool with small amts of mustard algae, full of only grocery store chemicals per Ben's methods? I don't want to add anything that is going to mess up my water balance at this point.

Thanks