I have a 29 gallon showcase aquarium set up for fresh water fish and i want to convert to a bearded dragon set?

it has a large light with a fluorescent bulb what other lighting would i need to keep 100*F day temp and a 60*F temp at night? i live in so cal so the weathers not too dramatic. i have medium size rocks in it now theyre more like pebbles or gravel. would that be okay for a baby bearded dragon? and can i have two in one tank? thanks for reading