I have a rescue leopard gecko that's approximately 5 months old and I was wondering what weight he should be at. He is almost 8 inches long and currently weighs 39 grams. In April he was 42-43 grams, May he was 41 grams and at the end of June he weighed 39 grams. He is currently on reptile carpet, but I will be switching him to paper towels in the next few days. He has a UTH hooked up to a thermostat and set at 91 degrees. He gets supplements 3 times a week (calcium with d3 and multivitamins).