Elevated CYA and Copper

Is there a non chlorine based winter closing kit that uses a non copper base algaecide?
Those kits are just money makers for suppliers. Raise chlorine to SLAM level, avoid the algaecide, and close once the water temp is below 60F. I’ve opened to a clear pool doing just that.

You should be waiting until October-November to close the pool. It’s way to warm right now even if no one is swimming.
 
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