eco earth.(because its digestable and higher humidity for glass tank)
i change out the ecoearth every month.
UTH but not on Tstat. i have one for my other snake so i can put it on that one too to help control it.
right now the hot sides at 90 and cools on 76
i dont have one of those laser THERM's but im thinking everyone else uses them so ill be on that train if you all recomend.
so it does look like belly burn?
**EDIT*** i just felt the substrate over the heatpad and its not warm at all? kinda cool to my touch. yesterday that i checked it i had a heat bulb on too (because they are all kept outside in my entryway to my room . its closed off so no bugs and no drafts, just 2 dogs as room mates and good air circulation. but maybe the buld heated the top of the hide too much and thats how he got (if it is) belly burn?