You guys were completely right about a glass tank being hard to keep up. After having Oliver for a few months, I decided to make the switch. The ease of care sounds soooo much better than what I am doing now. Anyways, I was wondering what size tub should I use for him. He is 23 inches long and 363 grams. What would you recommend? I was also wondering, how does the cold part of the tub stay warm if there is only the uth ( run on a therm, of course. ) I keep my house at 72 degrees. Would this affect the heat in the tub? Thank you for taking the time to read this.