Well, I use dog food to varied his diet. In captivity there is no way I can offer the stuff they would otherwise eat in the wild or offer enough varieties. My three toed that I've raised from a tiny juvy was fed salad, Reptomin, a little bit of soaked, low-fat, dried, dog kibbles, and inverts, mainly crickets and roaches. I've been giving him a lot more salad since he started developing some pyramiding, and I have to say it is almost gone. I find that the turtle food like Reptomin and probably Mazuri cause less pyramiding, so you can give them more as a source of protein. I usually give them low-fat, dried, dog kibbles to her/him only once a month or every other months. Feeding too much protein to young turtle cause severe shell deformities! I always provide the cuttle-bones for him to help him keep the beak trim when he bite on it and it helps with their high physiological demand for calcium. I think UVB light help them regulate the vitamin D3 and the calcium level in their blood better, so this way they won't develop pyramiding as easily.