My RES, Raphael, has recently been biting at the thermometer in his tank as well as the sealant holding the tank together. Is there anything I can do to make him stop?
I feed him and Michelangelo around the same time, but put them in separate tanks. This week I've been giving them zucchini as their veggie. Aside from a different veggie weekly, I also give them Nutrafin Max pellets, 4 for Mikey and 6 for Raph. Mikey isn't biting at anything, just Raph.

