Are you sure those are from algae? Have you tried rubbing them with a chlorine put or sprinkle some cal-hypo on them? If that doesn't work, it may be something else that blew into the pool and settled. Try a Vitamin C table or even a little pH Down in a thin sock or nylon.
Are you sure those are from algae? Have you tried rubbing them with a chlorine put or sprinkle some cal-hypo on them? If that doesn't work, it may be something else that blew into the pool and settled. Try a Vitamin C table or even a little pH Down in a thin sock or nylon.
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