I just adopted 4 leopard geckos (1 male/3 females). Although the previous owner kept all four together, I separated the male from the rest to give them a break from egg laying. The three females are in a 90qt Sterlite tub and the male is in a 73qt Sterilite tub. I am trying to determine how to keep these enclosures heated. The previous owner used an incadescent bulb and heat rock. I refuse to use heat rocks and am not sure an incadescent buld alone will do the job. Can I use UTH's with Sterilite tubs? I am thinking about using a Day Glo bulb but am not sure what wattage. Would really like to hear from those who are using these Sterilite tubs for enclosures.