JayF,
I live in NY. If you are in the north east as well---this time of year is hard to get things balanced as the weather changes; especially as the heat in the house comes on and off. I use a black light ( 50 watt) over the quarantine tank and a ceramic bulb ( no light) over the main enclosure. As always, any heat source needs close monitoring til things are right , making sure there are no hot spots.