Michael- your right on the money-most molting creatures will molt when there added to a new enviroment, due to changes in the water chemistry.
I keep two cleaner shrimp in my reef and they both molted the second day in my reef. They will molt in my reef usually after the kalkwasser additions, which are dripped in very slowly at the end of every month. I would not be to concerned, both my cleaners are two years old and appear to be very healthy.
