You really don't need more UVB than the MVB. You don't want to flood the whole enclosure with UVB. When you get the MVB, you are going to find that they will spend all of their basking time under it. They really do know the difference and act accordingly. If one of my MVBs burn out, the spoiled rotten lizard under it gives me a death stare and retreats into its cave! It is undeniably an act of protest! Their behavior and color doesn't return to normal until I replace the MVB.

I would say that you do need bright, but once you get your temps good, one or a few of those bright energy saver household bulbs will work fine for extra light only. Just don't use a coil UVB! They are dangerous.

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