Purple Nana Color Change

[Samw]

Brad, that was a timespan of 2 months.

I like the darker colour better. However, my millepora which you can see a bit of in the photos has lost its pink. Its turned brownish green (with a little bleaching on the tips) which I don't like at all.

Not sure why my other corals aren't colouring up the same way as Chuck (MtnDewMan) in Washington who has similar lights. It might be a combination of high nitrates in my tank, less waterflow, and shorter photoperiod. I added another powerhead yesterday to increase waterflow.