I'm thinking about not closing this year. We don't get hard freezes. If I run the pump on nights when it gets cold, I think my plumbing will be safe. I haven't completely made up my mind yet. Feel free to talk me out of it.
If I don't close, is there a good rule of thumb for chlorine levels when the water temp is below 60°F? Or do I need to maintain the same recommend levels based on CYA?
Thanks in advance!