Can I do a red slime treatment on a zeovit tank?

[Brent F]

I'm in the same boat with zeovit products. The water test perfect (0 nitrites, nitrates, ammonia and phosphates) and is very clear yet I have had some large algae blooms.

I have three tanks hooked in together so they share the same zeovit system. Two of the three tanks are clear but the third cycles through different algae blooms. I'm guessing it is either the lighting or that this one tank doesn't have the correct cleanup crew?