The most excellent Pool Calculator says I need to replace 12% of my water to reduce my CYA from 57 to 50.
Is it sufficient to simply ADD water, or do I actually need to empty and replace?
Also, how much difficulty is CYA of 57 going to cause my vinyl AGP?
Is it sufficient to simply ADD water, or do I actually need to empty and replace?
Also, how much difficulty is CYA of 57 going to cause my vinyl AGP?