I just bought a ghost sand sifter Tuesday. In QT now. Looks just like the Diamond without the diamonds... Well, that means, it's all white. Not too happy about being on a BB tank, but, it's sifting food just the same. Only going to QT this one for a week as not to cause any stress from having no sand...
Pretty active, but, I've seen some brab a mouth full of sand, and swim around while they sift. This means some will cover your rocks and coral with sand. Some just sift while they are on the sand, and don't make a mess...