Can I use a marine lighting system? I have a 3 x 4 grow space and I found a marine lighting system with 2 150 watt HID MH bulbs and two 90 watt "blue" bulbs. This system is supposed to allow a coral reef to grow. The system is $600 and comes with ballists and a nice fan cooled 4 foot housing. Will this work well or am I wasting my money?