[DrBegalke]

The dual daylight bulbs are 6700K and 10000K mixed. I only use 6700 K bulbs in my fuge, as they are a bit too yellow for my taste.

Dual actinic bulbs are 420nm (more purple) and 460nm (blueish) mixed.

Since you have two separate fixtures, what I would do is something like this:

4x36w : all actinics, I perfer 420nm but you could go dual actinic.

4x50w: all daylight (10k) or one 10k and one 50/50.


This way you can have them on separate timers. Turn the actinic on a couple of hours before the daylight fixture, and off a couple of hours after. Plus, a lot of corals look quite different under pure actinic lighting.

As far as types of corals under PC lighting: mushrooms, zoanthids, xenia, most LPS, etc. Can not keep SPS, clams.