So I've seen a few people ask around and I myself have wondered how or why a Bicalcarata will produce the infamous nectar which seeps from the 'fangs'. My time here or elsewhere on the web has yet to produce a solid answer, and my experience growing them also lacks any real findings.
But today, I found something which I had not seen in a few months, and that was, nice little beads of nectar coming off all the fangs on the plant. (4) I found this really strange because, for the previous two/three months I have been giving the plant conditions which I thought to be pretty ideal. Humidity of probably 90%< and temps in the upper 80s to 90s. During this period the plant significantly increased the size of the leaves it made, the size of the pitchers it made, and the rate of general growth. Now I am back in Alaska, and I have transfered it to a new terrarium where conditions are less than optimum, it's hard to keep the large terrarium even in the 80s, and it has a screen top so humidty has been irregular just whenever I have been able to mist it. but it has produced nectar.
So the only thing I have found is that maybe a slight decrease in humidity and or temps has led to the producing of nectar, but that amount of nectar is not exactly profound and there must be a ideal condition for this nectar to occur.
Please any other N. bical growers, share your notes on how you have produced fang nectar and how often, and such. It would be nice to find a diffinitive answer to what makes it happen.