Mine is in a 55 reef with 4x65 watts of 10k PC's&2x110 watts of URI super actinic VHO's....it sits near the top of the reef in a moderate/random current. I've had it for about 15 months. It hasn't grown much but it does appear healthy. It has never responded well to direct feedings...but seems to survive off the nutrients in the water column.Below is a pic of mine taken under actinics...its one of my favorite pics.