Also. I am using a top soil substrate with no sand in my table. I have seen him scratch his eyes once or twice but not alot and i check him daily and he seems fine. But what is the best way to check "dampness" of the substrate. Just im not sure wether it should be dry or rather damp.
i'm not sure how much humidity is recommended but you should be able to find out that information by doing a search on here or someone with more knowledge about horsfields can answer that question! oh and btw hello, welcome and Rocket is a cute name for a cute tort!