My highland Neps and Helis thrive in my current conditions but I want to get serious about growing a N. Macrophylla. I think I can cover the humidity, daytime temp, and light requirements with my current setup. I need a way to provide a drop in temperatures at night.
Cheaper is better and, at the moment, I am only looking to provide this drop for a one or two plants, so the setup can be relatively small. Right now I was thinking of just putting a frozen gallon of water in a tank with the plant each night but I would certainly like a more consistent and automated solution.