Coral metabolism vs. light par

[danny zubot]

So then, how do I get the most out of my corals? For example, I have a Tri-color Nana that is mostly tan with very brown polyps, and has some purple in the tips. How would I get this coral to color up more? I usually feed the tank Reef Roids once a week in addition to the frozen brine shrimp the fish get every other day. Over all though, I would way my tank is on the lower side of nutrients because of my over sized skimmer, reactor and fuge. Should I raise up my light to decrease the zooanthallea population in the coral? Or feed the corals less to do the same thing? I addition to the main three additives, I also dose regularily these suppliments.

-Iodine
-Strontium/molebdenum
-Iron/manganese
-pottasium iodide
-amino acids (Reef plus)