In general, what is an acceptable temperature range for most Heliamphoras? I have seen a lot of contradictory information out there. Some growers state that night temps of 45f-55f are absolutely mandatory, while recently I have seen a lot of growers having success with constant room temps without a significant night drop (~68f). A local nursery just got some H. minor (typical form, Auyan Tepui) in stock, and I'm interested in giving it a try.
Right now my small carnivorous plant collection consists entirely of intermediate-highland Nepenthes. I keep them in one of the greenhouses where I work. In the greenhouse, daytime temps can get well into the 90s during the hottest part of the summer and the water is fairly poor quality. The Nepenthes don't mind at all, but I doubt Heliamphora would do well in these conditions. I have a large, south facing windowsill in my apartment, and night temps there fall into the low-mid 60s year round, so I was considering trying out a couple Heliamphora there in a small terrarium. Right now, I'm only really interested in the easier/more commonly available varieties, so H. nutans, H. minor, H. heterodoxa x minor.