There are many kinds of algae, some thrive in cold water, some in warm. I've had thick algae in the dead of winter, under the ice. I usually add dye in the fall, and I think it helps, but does not eliminate growth.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.