I feed mine a variety of every kind of commercially available food; Hakari, Zoo-Med, Zilla, Wardly, Reptomin. I've tried everything, he never seemed to care for veggies, live food, shrimp, worms etc.... I recently got a bag of the new Hakari sticks (the dark green bag) and they are a big hit lol. I've had him for going on 10 years, he's as healthy as a horse!
75G; DIY turtle top, Zilla T5/halogen combo, Sunsun 302, Skim350, Aqueon pro, Saftsorb
50G; Aquasun 2xT5HO, Sunsun 302, Aqueon pro, Aquatek CO2 reg, UP aqua atomizer, Saftsorb