Lighting a 20 gallon aquarium.
I am building my own canopy for a 20 gallon aquarium and I am curious what my best option for achieving a moderate light setting would be. I will be adding CO2 eventually so I would like something fairly compact. From what I have seen, T5's seem to be an excellent choice, but I have been looking around and I have been unable to find a ballast to power HO T5's locally, so now I am wondering about the more readily available HO T8's. Compact flourecents also seem good, but that is probably another availability issue.
And on a side note, has anyone ever used the mylar sheeting aquariumplants.com sells, for a DIY canopy? Is it any good?
Any ways, I would appreciate your help, I am fairly new to all of this and I find the lighting to be a most frustrating issue. There are just so many options available it can be mind numbing at times, I am just really not sure what ballast and lighting would be most appropriate for my tank.