Howdy Andrew,
I'd be tempted to turn-off the Power Sun at around 6pm. I don't think there is much benefit from the extra 2 hours tacked on the end and many keepers have often noted that their chameleons have already migrated to their sleeping branch by 5pm-6pm indicating that they are done with lighting. If the room gets outdoor ambient light from that point on then I think things will be closer to ideal.
What is the distance from the Power Sun to the chameleon's normal basking position?
Like Brad said, there's too much risk in gutloading with catfood. We'll have to get you on the list for gutload from our South Bay Chameleon Keepers' resident gutload monger
!
https://www.chameleonforums.com/gutload-sale-12545/#post105175
Any reason that you aren't dusting once in a while with Ca/D3? If not then take a look at either Miner-All (I) (has a low D3 dose) or Rep-Cal (high dose D3) and look at Brad's schedule or one of the others out there. You'll probably find that 1-2 times a week is closer than none at all. (Nix the D3 if he's getting unfiltered sunlight for many hours a week.) Herptivite might be dosed at closer to twice a month for his age.
On a semi-side-note about lighting hours, a keeper that I know had lots of chameleon health problems. He finally gave-up keeping chameleons because they always seemed to succumb to some kind of illness. Months later, I was talking with his daughter at a store and she said that she finally realized one of the major problems with her dad's chameleon husbandry was that he ran the lights 24 hours a day
. Talk about your stressed-out chameleons
. They were just dying to sleep
.
