ProTeam Mustard Black Magic
If David and Jessica get mustard black algae in their swimming pool, this is what they use!
ProTeam Mustard & Black Magic removes all kinds of algae while keeping your swimming pool water clear.
This product is non-metallic and non-staining. It leaves no offensive chloramines and does not contain ammonia. We love that it restores water clarity and has a sanitizer exciter, lowering your consumption.