T5 with highly polished parabolic reflectors produce enough light to grow just about anything. My understanding is that you don;t get the shimmer effect in the water that you do with MH
(pleasing look kto many), but this can be accomplished by adding a LED
create more heat in the water than T5s but penetrate deeper from what I understand. A 6 or 8 bulb T5 should allow you to add anything you want to the tank though, so it's your decision.
Find a fixture you like and ask for comments about it.
Lighting is not an area you want to get no-name cheap fixtures. Quality pay in this area.