On tuesday of last week I noticed two small blisters on one of my spotted pythons, By friday it had progressed to several blisters, and now im noticing a few on one of my gray ratsnakes. the blisters are full of a white pus, my first thought was blister disease, but they are kept on newspaper and dry, and from what i understand blister diesease comes from being to wet. the room is at a constant 82 degrees, with no additional heat for the gray rat, and heat tape on the spotted with the warm end of the cage at 90 degrees. does anyone know what this may be and how i can treat it?