At a CYA level of 40 - is a target of 7 for chlorine too high? Would that do any damage to my vinyl liner or bother swimmers at all? Is there any down side to that target??
I use a pool app on my phone that asks for targets. I wanted to use 7 - just making sure that's ok.
I know the chart here says I should target 5 ppm but I always think a little more chlorine is better than too liitle less just in case I miss a day of adding it.
My Ph is 7.5 so Im ok there.