I have a hood with lights but they are the screw in kind. Should I just get higher wattage screw in's or get a different hood with a florescent? I have just a regular one for a 20G long and it lights it up AWESOME compared to the one that came with it. It is going to be a fish only tank... The lights that are on it now are just yellowish and not bright. The hood says MAX 25W bulbs...