Okay now. I see you posting quite a bit of advice on this forum as of lately and I think you need a bit of a reality check. Some of your advice is very good, most of it is not though. PLEASE know what you are talking about before you give people advice on caring for these lovely creatures.
OP: I would say a 30g is way to big for a hatchling. All that space is pretty overwhelming for something so small that has to constantly be worried about getting eaten by something. If you can, get him in a 10g. A 30g is good for a huge adult female. A 20g is good for an adult male.
Sounds like you don't have the right kind of thermometers. A UTH will actually heat up to about 115*F. A digital thermometer with a probe is what you need. Then put the probe right on the glass on the inside of the tank where the UTH is. You still need a thermostat.
Def. Get two identical hides. They need to be able to thermo regulate between the hot and cool side.
A picture would help us out so we can tell you exactly what you need.
Also, WELCOME!!