Yes, the CHEs don't produce any visible light, they are there to heat the enclosure up. They will make a warm spot that the tortoise might choose to bask in, I try to place the probe of the thermostat close to this spot.gotcha, so I could just use like 2 CHEs and run them day and night on thermostats? I dont have to have flood bulbs.
You are going to need some additional lighting so you and the tortoise can see. You probably won't run the UV bulb all day. I run it for 4 hours mid day, 10am to 2pm. This is what I use the led strips for, some people use the flood bulbs for this. There are a lot of ways to do this. You should really check out Tom's lighting thread, it explains it much better than I can.
You need to get moving quick on these heat sources ASAP if you have him inside right now.