I have an Engineer Goby... probably better than a foot long... if you get one make sure your rock work is stable and secure... he'll dig and rearrange the sandbed constantly... mines always pretty white.. :mrgreen:

I just bought a Dragon Goby and within 3 day my sand was bright white again.

I hear those siphon tubes can do a pretty nice job too.

That sounds like work. :)

I have one of those and it does a great job but I have to do it very often and when I do it I have to keep lookout for my lionfish. I am thinking about buying a Dragon Goby or sand dollar if I can find either one.

Matt