Sand sifting goby- which one?

[marcingo]

Hey everyone.

Im currently thinking of getting a sandsifting goby for my reeftank. Which type of goby does the best job at sandsifting. At a store I was told dragon gobies make huge holes- then I was told that a certain goby with a white body and yellow head is the best for sifting since it only does the surface and doesnt make very many deep holes.

Just looking for some advice on which goby to buy. I have lots of diatoms and wanted to have a goby to clean it. Would the dragon goby be ok or will they make big holes?

Thanks.