My water is very clear and chemicals are normal, Chlorine is around 5 but still cold here..My problem is I have green algae on the pool walls that won't brush off..Is the best solution to SLAM it? My Walmart hasn't started carrying the liquid chlorine yet but leaving it alone..
But I have never seen green algae that won't brush off even with force.
But I have never seen green algae that won't brush off even with force.