I am in the process of setting up a 29 gallon salt water tank. Since this is my first attempt at salt water, I am only looking to have a FOWLR tank. Contrary to what the guys at my LFS are trying to sell me, I get the impression that lighting really isn't so important for such a setup (especially for such a small size). Can I perhaps get away with the single 20W light strip that came with the tank (maybe with an upgraded bulb)? Or would that hinder live rock growth (coraline, etc.)? If I can, I'd like to avoid spending all that money for reef lighting (as well as dealing with the heat issues and the energy bill) if I don't really need it.