I feed him lettuce on a daily basis now with pellets every third or fourth day to be sure that he has a 75% plant based diet. When I am feeding him lettuce, how big should the leaves be? I usually make them pretty big, because he likes to nibble on it. Is there a particular size it should be?
Also, I have noticed that the bottom his shell is becoming to form brown marks. I wish I could post pictures up, but I don't have a camera. Could this just be dirt? I am using a basking platform that I purchased from PetSmart...could it be scraping his shell when he basks?

