Hey so im somewhat new to growing, at least indoor. I have little room to work with, my first try is in a old computer. The tower under the monitor, I cleaned out everything and used tin foil as a reflectant. I am going to use cfl lighting and i have 2 of the computers fans for ventilation, but was wondering what the best grow medium would be for the plants? because i know soil will probably take up too much room and not allow me to get a decent sized plant. does anyone have any advice