i have some starburst polyps i just got about 3 days ago, and they wont open. out of about 100 or so polyps only 10 have stretched out. i have 2 10 watt flourescent bulbs in the hood. is this enough or do i need more? its plenty enough to open all my zoas, even the ones at the bottom. i have the starburst mid height in the tank, in direct current from the powerhead but on the oposite side of the tank. any suggestions?