His shell is just fine, but I think you would benefit by reading the care sheet and changing your tortoise's diet a bit:
http://www.tortoiseforum.org/threads/russian-tortoise-care-sheet.80698/
(Alvaro = Aloe vera? causes runny stools, so should be given infrequently)
http://www.tortoiseforum.org/threads/russian-tortoise-care-sheet.80698/
(Alvaro = Aloe vera? causes runny stools, so should be given infrequently)