Went into school today and Mustache has a white, dusty film on him. He's been in his water more since he shed and I wonder if it is something in the water or dust from the remodeling that is going on. I tried to dust him off and some of it comes off but most of it seems to be dried to him. I've bought some distilled water to replace his tap water when I go back to school and hope this helps. Any other suggestions?