The word favourite appears to be a stumbling block here so instead of favourite coral lets look at pics of corals that are doing really well in your system. Ones that have vibrant colour, great growth and makes all your guests say "wow look at that, what is it?"
Snappy, did that coral start to change colour as soon as it was in your tank? or was it in the tank for sometime before it started turning.
You wouldn't by any chance have any plans for moving (with tank and corals) to Powell River sometime in the future
