The tank is a basic 20 gallon. The default, not the tall or the long. As for the strength of the lighting, I just want something that will be good for my plants. I was given an assortment from Petsmart (I'm an employee there) so I have no idea what kind each one is and if their lighting requirements are different that the next.
buy a fluorescent from the hardware store and mount it to the underside of your cabinet I would get a T8 preferably a T5HO 6500k light