Hello and Congrats on your new Beardie,
Like BrttanyS mentiined you do need to get a UVB and yes the Reptisun 10.0 fluorescent tube light is a really good UV bulb. The 100w bulb is too much(hot) for a 10 gal tank. In a 10 gal tank you could probably use a( 60w bright white household ) bulb, you don't neccessarily need to go out and purchase another basking bulb if that is what you are currently using. You can use the 100w in your beardies new enclosure.
Are you measuring the temps at all ? The best way to measure the temps is with a digital thermometer with wire probe. You can pick one up at Walmart. They have one called Acurite which will give you your basking and coolside temps. The Acurite is $12.
For a baby the basking spot should be 105-110. With a cool side of 80-85. Right now you probably don't have a cool side with the 100w bulb your using, so take that out ASAP and replace it with a 60w.
If you don't mind answering a few more questions, maybe we can help see if your all set up for your little guy.
-Usually we ask about your basking/uvb(but we have already gone over that)
-What are you measuring temps with?
-What are you feeding your beardie and how often?
-What kind of substrate are you using in the bottom of the tank?
-How often does your beardie poop?
Dawn