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Carnivorous Plants/Highland nepenthes tank


I have a couple of questions, I'm planning on making my aquarium into a highland nepenthes tank. It's kind of small, 50x33x27 cm, but I think that it's big enough for the moment, since 8 pots fits inside and there's still allot of space between them.
I know this tank isn't big enough for long time growing but I'm going to start with smaller plants and then when it's needed I'm going to buy a new, bigger tank. I've been thinking about getting some species from Sumatra, Nepenthes Aristolochiodes and Jacquelineae for example.
The light fixture I have is a T5HO fixture, 2x24 watt tubes( with 3300 lumen.
I'm going to buy a small computer fan to get some air circulation as soon as possible.
The humidity in the tank is around 88% and the temperature during the day is about 23 C.
But my big problem is the night temperature. Right now it stays at about 23 C during the night, and with frozen water bottles I'm able to get it down to about 14 C, but the humidity drops drastically from 88 % to about 62 %. And these Nepenthes need around 10-13 C and about 80 % humidity during the night and 70 % during the day if I'm correct, and I've been searching like crazy for a solution for this problem. The best I've found is thermo electric cooling, some say it works, some say it doesn't. But I have no experience at all with that so I have no idea.
Another thing I've found is to get an AC and hook it up with a humidifier, but that seems pretty overkill for a tank this size.

Do you know any efficient solutions to this problem?
Thanks! :)

PS. I asked Christopher but he said that he had no experience with growing nepenthes in a terrarium,
but then I remembered that I've talked with you before and that you said that you have a highland setup.

Hello Otto :)

Your setup look like ok. In fact, i grow all my highland nepenthes with 70-75%RH, with daytime temp at 25C and nights at 18C. And everything thrive with giants pitchers.

For your setup, down your night temp at 17C, your RH will be at 65%-70%, and its perfect. If your plants have 80% all day, 65% at night will not affect them at all.

Right now i have a A/C just for my plants(and for my girlfriend when she moanh) but before that, i was with icepaks :)

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Francois Boulianne


I can answer many questions about carnivorous/protocarnivorous plants. How to grow them, how make them thrive in perfect growing conditions. I will answer english and french questions.


I grow carnivorous plants for many years. Right now i have 27 species and subspecies in cultivation. Its a passion for me.

Botanix laval(mtl) Hydromax Que-pousse Laval

Guide botanix (french guide to our gardening center) Jardin d'interieurs(french magazine about gardening tips)

I work as warehouse director in a big gardening center in Montreal, Canada.

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