The local exotic vet has it mentioned on their site that " The new mercury vapor bulbs provide heat, UVA, and UVB" Is this correct, and can I replace my one uvb, and 1 basking bulb with this mercury vapor bulb? Also is it 100% necessary for them to have a 10.0 UVB bulb? It's just hard to find consistant data on husbandry especially when I was given my primary info from Petsmart, and I'm always skeptical on their advice.