At some point, you're going to have to either start caring for the pool yourself and get rid of Tom, or let Tom do it his way. If you're already taking care of it, why do you need Tom?

I would be interested in what form of chlorine he's adding--I'm guessing he's shocking with dichlor, which is raising your CYA every time he adds it. If that's the case, I'd stop him now...........

Janet