Too much uvb?

[concept3]

hey, i got my beardie male about 6-7 weeks ago hes doing great. I have a uvb fixture i think its a 8.0 and i put it in the tank neer his basking spot, 4-6 inches away, now i was just wondering is their such thing as tooo much uvb? ive never heard of it but i was just wondering about it, its my oly lizard, i mostly keep frogs, lots of frogs.
thanx for your help

[DragnDrop]

Since wild beardies soak up the sun full force, and even the best UB bulbs we have are no match for sunlight, I'm betting you can't overdo the artificial UV-B without much effort.