400W radiums. anyone here use em?

[Doug]

Perhaps thats a good point Stephane. I will give it a run and see how they respond. When I tried with the 12K, I had sps in there also. I know for sure my huge bubble coral will just love it. :D I wonder if bulb life is different between the different ballasts.

My pendant is an Icecap fixture. Uses the parabloic reflector. To my eyes, my tank is just as bright with a normal white reflector as compared with the parabolic ones. But I also have seen the tests regarding reflectors.

I know that a single 400 is pushing it on the tank, but because of its almost square shape, it works pretty good. I am careful about whats on the outside. Some blue mushrooms or similar would be my choice.

Of course I have the 180 with much more lighting, for the corals that require such.