Growing out corals.

[adam84]

I have been watching the effects of nutrient levels in my system for a while now and have found that colors seem to be best when no3 is maintained between 5-10 ppm, I know many would argue this is on the high side but it is working very well for me. The other variable that seems to have a large effect is not only light intensity but the photo period, how long are your lights running at 100% per day?