Just a few questions on seeing conflicting info on

Should I use an incandescent bulb with my UVB 2.0 bulb? If so when?

I have a humidifier of the cool mist silent type which I fill with bottled spring water, is this an effective way of helping with humidity?

Any tips would be appreciated.

Pics of my set up for my little guys.

http://imgur.com/houc8lR
http://imgur.com/rKav2vI