I would not recommend regular lights. I am assuming you mean the type that fits in a lamp(incandescant). Wattage is not the answer to reef aquariums by itself. You need the proper light spectrum, and intensity. Many people refer to WPG, but forget to tell you the WPG without the right spectrum, etc., will not work. If it did, we would all have the best lighting possible with regular light bulbs.
I hope I did not come of too blunt. Try some good VHO, MH or PC lights. If you are only keeping softies, then some 10,000K and Actinic fluorescent bulbs will probably surfice.