Hey folks, just joined the forums though I have been lurking and reading people's threads for a while.
I have had a subtropical/highlands terrarium set up in a 10g aquarium since July and everything has grown well without issue so far, excepting the venus flytrap (now dead) which doesn't do well in terrariums like this anyhow.
I recently made some changes in lighting, as well as added two more highlands neps. I originally only had N. ventricosa, which seems to be really easy to grow. I have had no problems with mine except the one I abused by trying to grow it out of a hole I drilled in a log (it was going to "look" cool, but the sphagnum stayed too dry as close as it was to the lights), I replanted it and it is coming back, just stunted compared to my other.
My lights were, as of starting, two overhead fixtures that fit incandescent bulbs, but instead I put in the highest powered coiled fluorescent bulbs I could find (26w, rated as 75w if incandescent) and 3500k. These did well, but I recently decided to add in a power compact fixture that has two 65w fluorescent bulbs. I need to get the right bulbs, but right now it came with a 12000k daylight lamp, and a 50/50 actinic/plant bulb, that I do not know the kelvin rating on (but I do know I don't need actinic!)
My issue is that the fixture gets very warm, and now my terrarium is reaching new highs of 80-85F during the day, but I can get a drop to about 65-68F at night. I know N. ventricosa probably won't care, but I am worried the new N. singala 'Belirang' and N. spectalabis x aristolochiodes won't appreciate such high temperatures.
Humidity is around 55-60% during the day, and about 80-85% at night.
Picture of terrarium: