You have a basking bulb the white round one. Add it to the dual lamp with the nighttime bulb. And just leave the basking bulb on during the day. And the nighttime at night. What you can do is switch out bulbs every morning so that the uvb uva and basking bulb is on. Then at night add the nighttime bulb. At least until you get a uvb uva fixture. Get the long uva uvb. Like the reptisun. Then you can just leave the day basking bulb and nightime bulb in the dual lamp together and leave the basking bulb on with the reptisun on at day and just turn on the nightime bulb at night only. I would try to get the reptisun as soon as a possible the uva uvb bulb you have might be a coiled one. Those are dangerous as they stare into the bright light all day. And can cause blindness. Did i make any sense?