Hi and welcome! Your beardie is a cutie. You say he is 5 months old? He's huge for that age! Looks closer to a year or so
I feel bad when people jump down new peoples throats all because they've done some things wrong. We're hear to help one another provide the best care we can for these animals, but if someone disagrees with your opinion it's best to let it go. Ego is huge it seems.
None the less there are suggestions people will give you. The Reptisun by ZooMed is the most recommended light. Don't feel bad if you do not have one - it took me 6 months to finally locate a supplier in my city. They are very hard to come by here in Canada. Though if you are in the states, you shouldn't have much trouble. The light itself ranges at the $30 - $40 range. And in the case of any light should be replaced every 6 months. You can acquire a cheap fixture for it at walmart. Apparently this is an under-the-counter product for like $10. I am not totally up to snuff on all the lights - but when we got bindy we had a coil bulb, which can be harmful to their eyes. We then acquired an MVB bulb, which provided heat and UVB. It was a neat little bulb, but to appease everyone, I managed to find a source for the ReptiSuns.
Another thing to remember is that feeding an the appropriate amount of veg-bug ratio. Under a year they will be mostly taking in live feeders. It's suggested to have a varied diet if you can. Look into getting some hornworms, silkworms, butterworms or ever superworms. It's been said that meal worms are dangerous for beardies. Because they have a hard to digest exo-skeleton, they can clog up a beardies digestive tract, causing impaction. It's just a precaution. Better to be safe than sorry. None the less, always offer those veg. You seem to have great variety all ready! Always offer it to your beardie fresh, so he gets used to the idea of eating it. (Babies/Juvies typically wont bother with it. But none the less, it should be there).
And yes, sand is viewed quite negatively on this site. But with reasoning I can see more cons than pros. It's not very clean, hard to clean, hard to keep sanitary, and just messy. We found that slate, and tile work great for our tank! We take it out once a week to clean it, assuring no spread of germs. The tile/slate also keeps nails nicely filed so you do not have to clip as often. Another pro to tile - Bindy was sick last month, and in order to keep the germs from spreading, we had to take out the pieces of tile he pooed on to clean, disinfect and return to his tank almost immediately. I couldn't imagine keeping his Coccidia count down if he had been living on sand. We probably would have had a sick little beardie. I know a lot of people recommend non-adhesive shelf liner or repti-carpet as well. The latter seems to have the same problem as sand - hard to clean, and hard to keep clean.
If you are worried about your beardies 'comfort' level you can certainly put towels, or blankets in his tank. We bought some fleece from a local store for Bindy. We snuggle him in it, and he sleeps on it all the time. If/when it's dirty, it goes in the wash and I grab another piece. Otherwise he runs all over his tank on his tile and slate getting his exercise
102-105 is actually a pretty decent tank temp on the hot side. You do not want to go much over 110, and in order to start digesting food properly, the temps should be around the 100 mark. Your temps seems pretty darn good
Actually,
this thread has a super awesome lighting set up explained. I studied this thread daily to assess Bindy's tank before I finally settled on his current situation.
I hope I was able to give you some helpful tips! Take care, and good luck