For the sake of info. I have the fluorescent light fixture but I also attached a 11x12 inch piece of Flexwatt for my hotspot and it works perfectly. I keep the room heated with a portable heater to help keep up the ambient temps throughout since it's winter but I use the Flexwatt to provide a good hotspot. Since the enclosure is thick I have to set the Herpstat slightly higher to reach my attempted hotspot and so far it has worked perfectly. I have 2 accurite thermometers in the enclosure to make sure the ambient temp, humidity and hotspot stay at the appropriate ranges and for the first couple of weeks checked the hi and lows on each to make sure everything was working properly. I leave the displayed temp on the Herpstat unchanged although I could have matched the hotspot and the Herpstat display I figured it better to leave it so that can always make a quick reference as to the exact temp of the Flexwatt itself. Temps and everything have held perfectly for me though. I really want to put up a pic but since it's my girlfriends setup Ill let her do it since I know she's looking forward to showing off her new baby_______(<--- her secret to share/ my anniversary present to her) and the enclosure itself.
I'm definitely a little late on this post but I thought it fairly important to give an update since I began to think that it wasn't possible an it turned out to be pretty easy to setup. <hope this post finds you all well >