sifting goby putting sands all over place!

h2o

Member
my golden head goby is nearly covering 1/2 of my open brain coral. very often i clean the sand out of it, but in no time it's covered with sand again. To protect brain's coral's tissue being damaged by putting on the live rock, lfs suggests putting on sand bed, but is it ok my goby puts a lot sand on it? should i just leave it along, or constantly clean it?
 
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