I use a Brand new (1 month old), reptiglo 5.0 tube which is about 6" away, that should be Plenty of uvb light, the temp of the water is 73-75f depending on time of day and the basking spot is about 93f, and he seems to love it, he seems to be up there for awhile during the day.
I also have a website people can look at about uvb lamps, its different testing on different sizes manufactures sizes, lots of stuff.
http://www.uvguide.co.uk/fluorescenttuberesults.htm
Kinda cool...
Anyone have any other ideas? I'm lost on those spots, other than the fact it could be a fungus, but I have no idea what would cause it, other than hard water, ill have it checked tomorrow,
When I first got him i brought in a sample of the water and they said it was fine, though the guy didnt seem very smart, he does not know much about turtles, than when I confronted him on it, his reply was he owned two healthy 8-10in RES, THAT ARE IN A 55G tank, wow is that wayyy too small, I even know I need more swimming room but that is being fixed over the holiday, ill bring it somewhere else to be tested.