Suggestions on a sand sifting goby

[Reeferluke]

So I have been battling brown algae on my sandbed for a couple of months now. So I'm half thinking of a sand sifting goby but I don't want anything that will spread sand everywhere in the tank. My tank is a mixed reef sps dominate with lots of zoas and acans on the sand bed. I Have a rusty angel a springer damsel and a green chromis for tank mates Tank is a 72 bow front and 20 gal sump. Any suggestions would be great thanks Luke