It's an Aussie Acan lord colony. My calcium tends to run high (around 450ppm), alk is a little low at about 3meq/L, I've never measured magnesium. Other levels are fairly normal, nitrate is a bit high (~20ppm) due to heavy feeding. I do dose iron, silicate and vodka, but I doubt any of those have an effect.
I use a 6x36" T5 Tek light for the lighting, the general spectrum is more in the whiter range (I go for a full spectrum look). The colony sits about 18" below the light.
As far as feeding, that might be where I am getting ahead. The tank is primarily set up to support non-photosynthetic corals such as dendronephthya, tubastrea, scleronephthya, and an assortment of sea fans. As such it gets a lot of continuous feeding of phyto, rotifers, nutrimar prawn ova, cyclopeeze, and other misc frozen food. I do not target feed, however.
I can take a picture if anyone is interested. I don't think I have a pic of it when I got it, however.