[spanko]

John, great evaluation and thank you for taking the time to do it. What I am looking for in the light is what I have read about the Radium, limited blue compared to other 20k bulbs, higher PAR value and a brighter look. To me, especially in person, the tank is much brighter in both the light and the blue coloration. In the pics it can be seen in the greens, the Monti caps on the right and the zoas on the left. I personally think it gives more of the shallow brightness of the water look to the tank. The 14k looks like a darker more deeper coloration. It is great to get other opinions like this and I think what is important is what is pleasant to our tastes when we are trying to achieve a certain look. I do think you are correct though with your idea that the reds and pinks are more noticeable with the 14k and this would in fact be true in more shallow waters as the reads are the first of the spectrum to be filtered out by the water.
I think we need to keep in mind that it takes about 100 hours for the Halides to actually "burn" in and the visible spectrum may change over this time. I will post some updated pics in about 19 or so days to see what has evolved with the lights.

If you mean by subing what am I adding I use ESV B-Ionic 2 part additive. It has a calcium part and alkalinity part. This allows you to dose what ever is needed from testing for either and not over dosing the other. I also do 20% weekly water changes using NutriSeawater natural seawater.

Again John, thank you for looking and commenting you have a keen sense for the aesthetics of the tank.

By the way I love the Maroons in the anemone picture in your gallery What species anemone is it?