My 6 month greek tortoise is having some trouble moving around his tank. The substrate is just bark and my tort is very small as he uses a lot of effort to move. I was thinking of changing the substrate from bark to something that would be easier for him to walk on. After a trip to a local nursery, i came upon some irish and scotish moss. The moss is very green, flat, smooth, and feels very fuzzy to the touch.
Would it be a good idea to change the substrate?
Would i need any other supplies to keep it alive? If so what supplies?