Sorry to see the colony go south!

About the crab, to save/keep him, pick up the colony, put it beside another empty one, and chase him around with a toothpick. They tend to jump out fairly quick into the new colony if there is another one almost touching it. I have one that lived in two colonies that were 3/4" apart and he was only half an inch long, and I watched him jump across alot of times with no worries, he took his time.

Chris

Tony there is a product by Tropic Marin called Pro Coral Cure that is supposed to be very effective at removing these as they are very difficult to get rid of. I have ordered some and hope it is here next week.
http://www.saltycritter.com/medication.htm