I would lower the salt, not because it's harmful as Pentair's high limit is 4500, but because I don't want to taste it. At 3000 to 3200 it's barely there for us.I am slightly concerned with the salt and calcium levels. Should I do anything?
If your fill water softened ? If so then I wouldn't worry about the 625 CH unless it starts scaling. If you have hard fill water then it won't be long before you're draining fully so keep that in the back of your mind.