Having a decent amount of free time over my winter break, I want to finally put in some effort and get a decent terrarium set up for some of my plants. I plan to have the terrarium itself next to a sunny window back at school so it will be getting both natural and artificial lighting. I will be keeping some common dews, sarr seedlings, and N. Ventrata and N. x Miranda in it. What would my optimal conditions be? I currently have a 2-strip light fixture with 2 5000k bulbs in it, and I have a computer fan wired up that I could attach somehow if necessary for airflow. I will be using just a small 20 gal aquarium (only one I have)...I also have a heating mat that can be placed under everything to generate heat.
So how would everyone go about getting good conditions in a setup such as mine?
Any input is very helpful, I've yet to create a close off growing environment such as this one.