you just have to feed them alot, basicaly they eat constantly like a rabbit and the food passes thru them fast so they dont absorb all the nutrients small digestive system so 6 portions daily keep them in good health auto feeder recommended i use NLS .5mm pellets all he eats and is healthy 2 months now heres a video of mine
http://www.youtube.com/watch?v=UBjr1QTuvp8