Long story short, I'm going to be planting things in a soft plastic mesh that's very effective at wicking water. The roots of anything planted in it will stay damp constantly, but will have plenty of aeration. I'm assuming CPs will grow fine in this stuff, since it doesn't have any minerals in it. I really want either a sundew, a ping, or an extremely slow-growing nep in this, partly because they're cool and partly in order to eat up any fungus gnats that turn up. I also plan to keep at least one type of bladderwort, to see what they think of the substrate.
The trouble is, I'm very limited as to what light I can provide. It's a safe bet that the lighting from the window will suck, and the fire marshal is very strict about what electronics can be used. The only thing I can use is a small reading lamp and the best LED bulb I can fit in said lamp. The bulb in question is a 100W LED that puts out 5000K and 1680 lumens, and I can put the bulb very close to the plant.
Will grow in inorganic material
Will eat fungus gnats at a considerable rate
Will live and grow properly with the aforementioned light
Doesn't require dormancy, or requires dormancy that can be very easily accomplished with no temp control (i.e. just move the light further away for the winter)
Relatively unfussy about exact humidity and temperature, in particular alright with colder nights
Is very unlikely to reach over 4-5" across in the next ~4 years
I know I won't get any good colors under that light, but I at least want something that'll be healthy instead of just existing without dying. I want growth- just not dying is kind of depressing.