How would you go about raising basking temps?

[Brittraff]

For like 5 degrees more, what are some suggestions? mine are at 100 degrees, but how would i raise them? Buy a new bulb?

 

[diamc]

If you only want to raise the basking temp by 5 degrees, you could either raise the basking spot or lower the bulb as long as the bulb wouldn't be any closer than 6".