[arvin555]

I would like to hazard a guess here. We are talking about Low Land neps, and my guess is that aside from photoperiod I don't think they need much temperature and humidity fluctuation, just the Sunlight/lighting.

It is a different matter altogether with Highland nepenthes, which needs both Lighting changes and temperature changes.

I guess it boils down to what is the natural condition of the plant, and usually Lowland do not have much fluctuation with regards to temperature and humidity. At least that that drastic, I mean the temperature of your terrarium will probably slighly cool down at night when you turn of the light anyway right?

TTFN
Arvin

ps. Oh sheesh just realized you are from Oregon, so you will probably find lowering of temperature during winter? If so I'd like to suggest that at the least keep the Humidity as high as possible even if there is still a bit of cooling, and do not allow to cool too much, can't say up to how much, I would hazard nothing below 20C, but don't quote me on that.