I'm from Sweden but live in Michigan since 10 years. Last summer we installed our pool and this year we are looking forward to enjoy a full summer with our pool. I set out early to learn about the pool chemistry and find it troubling. For example this year we just opened the pool and since it was first time I had the pool company come out and do it for me. Everything has been going well and pool is looking fantastic. Still not to warm here in Michigan last few days but I've been monotoring my settings and checked Fc and TC morning and night to see if I could figure out the correct percentage for my chlorinator.
Here is what has happened since Monday morning without any swimmers during this whole period with exception of 2 small frogs:
4/18 Chlorinator 70%:
4/19 Chlorinator 70%:
At this point I decided to lower my percentage to 60%on chlorinator.
So now all of a sudden I have too high level of chlorine no one has been using the pool and I need to shock it??
I do not understand what I need to do to maintain a stable pool. Please help.