I got mine as a gimme. My friend would wake up every morning to find his rocks covered in sand, really ticked him off. Ive had it for about a year now. He has stayed put in one spot and not made much of a mess up until just recently. He just started a new burrow close to where I drop in the food.

I havent had a problem with him except for the time he covered part of a Fungia. I didnt notice it for about a day. When I removed the sand, the part that was covered was bleached. It just recently has been getting its color back.

Ken