i have a 10 gallon reef tank setup been going for about 5 months, all chemicals are dandy, had a low ph outbreak but used a buffer and now im back at 8.3, I have a few types of small to medium button polyps, some fan filter feeders, a medium sized mushroom polyp and a small bubble tipped anemone. i was wondering how much wattage i should need for it and what type of lighting is best? i currently have just a 17 watt regular fluorescent bulb i bought from my local pet store with the top and fixture as one. Is this light cool and will it provide enough of what my tank needs.