The T5HO UVB bulb is just UVB lighting that prevents MBD. The 5.0 bulbs you replace every 6-9 months and the arcadia 6% bulbs you replace every 12 months unless you buy a solarmeter 6.5 that tells you what output your bulbs are still producing. With the T5HO fixture and either of the bulb strengths I mentioned above you would have the basking branch 8-9 inches below for the correct UVI level.But do I need to leave the blue bulb that came with the kit or just that T5HO will be good?
Yes you need a heat bulb as well. I would use a regular incandescent white household bulb. That blue bulb is a heat bulb. But you would pull out the coil bulb that is in the double dome because it is not adequate for uvb.
Lights are 12 hours on and 12 hours off total darkness.