For what it's worth....why do people think it's only necessary to dust insects once in a while? How once every few feedings, etc instead of lightly every time they feed or almost every time??? Don't the insects always have the same poor ratio of calcium to phosphorous?? If so, why do we not dust every time??
As long as your insects don't look like ghosts IMHO it should not be able to build up in the system. If I'm wrong I wish someone would show me the study done showing it.
The supplements you have to be careful of....the ones that affect the organs when they are given too often are vitamin A and D3....they are fat soluble and when coming from supplements they can build up. Read the part under non infectious diseases...starting with paragraph two...
http://www.seavs.com/lizards/chameleons/#!
Why are you using a 10 UVB? I've never used one on any of my chameleons...I just use 5.0's. Do they have lots of cover/greenery to hide in when they want to get out of it? And the do have plenty of greenery to find cover if they need to.
Just my own opinions...