Highland Nepenthes tank

[Trettman]

Hello!
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(http://www.wexthuset.com/vaxtbelysning/t5-lampor-lysror/lightwave-t5-2x24-w-p1) 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 65 %. And these Nepenthes need around 10-13 C and about 80 % humidity during the night and 70 % during the day if I'm correct. 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.

Does anyone have any ideas?
Thanks!

 

[BigBella]

That highland Nepenthes require such saturated nighttime humidity, is a bit of a myth. That temperature drop is far more important in the long run; and the humidity will later rise.

Another effective solution is to provide humidity trays under your pots -- undriained seed flats with a layer of gravel, with water added to just below its surface. As that evaporates, the humidity rises. Nighttime misting could also be of help . . .

 

[Trettman]

Okay, so the 14 C is okay?
And will the lightning be enough or do you guys recommend anything else?

 

[corners]

That highland Nepenthes require such saturated nighttime humidity, is a bit of a myth. That temperature drop is far more important in the long run; and the humidity will later rise.

Another effective solution is to provide humidity trays under your pots -- undriained seed flats with a layer of gravel, with water added to just below its surface. As that evaporates, the humidity rises. Nighttime misting could also be of help . . .

You can also put hydroton on the bottom of an aquarium, the stuff is cheap and easy to clean

 

[The Griffin]

I think 14C should be low enough for most HL neps.