Coral metabolism vs. light par

[danny zubot]

I understand the temperature side of things, and I understand the water flow thing. I always thought that more zooanthalea meant more color, isn't that where the corals color comes from? I don't think that my corals were getting enough nutrients before, because I only had one fish in my tank for a long time until recently. From what you are saying the coral would have relied more heavily on it's algea at that time, thus more reliant on light?