Okay, let's make this simplified...You need only 2 lights, one a bright white basking bulb, and most likely a 20 gallon long tank cannot take a 100 watt basking bulb, it will be too hot.... He'll need at least a 40 gallon breeder tank soon, a 20 gallon long is much too small for an older juvenile and older, but for now let's get his current enclosure right. He's not eating because #1 he has no UVB tube (UVA light is emitted by the UVB tube as well), and #2 his temps are very off. The meat thermometer will not work, it's meant to be inserted into something to get a core temperature, a $10 digital thermometer with an external probe that has the sensors built into the probe end is what you need....Once you get a proper 10.0 UVB tube and long fixture mounted at the correct distance from him to work, and you get the correct wattage, bright white halogen indoor flood bulb and get his temp ranges correct, he'll become active and eat you out of house and home for live bugs (do completely avoid any mealworms, he doesn't need an impaction on top of this, and without proper temperatures he cannot digest his food anyway, so adding hard, chitlin shells to his stomach right now is asking for a very bad impaction)...
A 20 gallon long will probably take a 75 watt bulb, maybe a 60 watt to get his temps correct. A 100 watt will cook him in that...But buying a digital probe thermometer is the first thing you need to do, it's that important. Once you get the thermometer and a 75 watt bright white halogen indoor flood bulb or bright white basking bulb, then the long, 10.0 UVB tube and fixture being mounted unobstructed and within the correct distance from his basking spot (based on what strength tube you buy) is all you need to get him eating...You can try smearing bug guts, but the issue is, and AHBD will totally agree with me, he won't even want to eat that without a proper UVB tube, and if he does happen to eat a few bugs, without proper temperatures he cannot digest it or process it! We're talking the difference of a baby under correct UVB light and correct temps eating 30-40 live bugs or more per day and growing and developing properly, and failure to thrive...
A 20 gallon long will probably take a 75 watt bulb, maybe a 60 watt to get his temps correct. A 100 watt will cook him in that...But buying a digital probe thermometer is the first thing you need to do, it's that important. Once you get the thermometer and a 75 watt bright white halogen indoor flood bulb or bright white basking bulb, then the long, 10.0 UVB tube and fixture being mounted unobstructed and within the correct distance from his basking spot (based on what strength tube you buy) is all you need to get him eating...You can try smearing bug guts, but the issue is, and AHBD will totally agree with me, he won't even want to eat that without a proper UVB tube, and if he does happen to eat a few bugs, without proper temperatures he cannot digest it or process it! We're talking the difference of a baby under correct UVB light and correct temps eating 30-40 live bugs or more per day and growing and developing properly, and failure to thrive...