A lot of people i know just leave their acans in the sand bed. I'm one of them. However IN trying to keep a cleaner sandbed I picked up a Diamond Sand Sifting Goby. Beautiful creature. unfortunately.. he LOVES To cover over my darn acans with sand.. It looks like I will need to move them onto the rocks. Any opinions about doing that? I'm not 100% sure how acans grow if they will make their own skeleton or if they spread onto rocks.