Mine are mostly the non-dimmable units. The dimmables weren't available when I bought most of mine. Over the main tank I have 3 non-dimmables and 1 dimmable, which is naturally at 100% intensity to match the others. In the frag tank I have a dimmable model running at about 80% blue and the whites at about 30%. in that tank I have some LPS
that was having a hard time acclimating, and a LTA that was the same. they are doing quite well now, and I also have various montipora doing well at that level too.
In the main tank I have mostly sps
. Some LPS
that was able to adjust, as well as a pair of rose bubble anemones.
You can view pictures in my build thread-
Doug's 250, now 300, in wall build