You will have a huge algea bloom, and 4-5 hours wont really be enough for the coral. If the hood is a regular old aquarium hood it is not good. Its not all about wattage per se. Here is an excerpt on lighting from another forum.
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Different lights put out light in different spectrum. The color of the light matters. Different corals prefer light in different colors. And most coral will turn brown under the lights that we use to light our house. The wattage of the light doesn't matter(well it sorta does, more watts usually mean more lumans), its all about how efficient the lamp and reflector combo can get the watts into the tank. You need to have sufficient lumans.
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