I agree with PoolDoc. That's algae.
It seems like you can put a lot of chlorine in the water with those cal-hypo tabs. I'd use them and bleach to get the FC to 10-15 and keep it there until the green turns blue.
Re: Iron in water source
I agree with PoolDoc. That's algae.
It seems like you can put a lot of chlorine in the water with those cal-hypo tabs. I'd use them and bleach to get the FC to 10-15 and keep it there until the green turns blue.
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