Yep, just shake off the sand and it should be ok. I find at least one coral a day covered in sand from my evil goby. lol
I've lost a few corals though this way so you have to be vigilant and make sure you dont leave one under sand by accident, i missed some of mine being covered and thats a sure recipe for death. :-(
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.