Just cuz you have it set to 92* u may want to make sure its getting that hot with a thermomoter probe. I have the same one you do and i have mines set to like 86but the temps in the tubs are 90-92
Also you do not need the light. All you need is ur heat pad which provides the hotspot of 92* and then a ambient air temp of like 80.
If you have ur ambient temps 90* and a heat pad how is he supposed to thermo regulate?