Glad to see you're on the right track now and this should be a lesson to others when using left over chlorine. Add then test after an hour to make sure it's getting you where you want to be. At least the first time you use it. And it's not a bad idea to do that when using a new batch either just to be sure you got what you thought you got.
Also a note about solar covers. I have a clear cover and leaving it on during the day doesn't affect my chlorine usage at all. Opaque covers have been reported to but I have no experience with those.
Also a note about solar covers. I have a clear cover and leaving it on during the day doesn't affect my chlorine usage at all. Opaque covers have been reported to but I have no experience with those.