I have the cleanest sand bed ever! I have a sand sifting star and a dragon goby. The only down fall to the dragon is he tends to cover the coral the lower corals with sand and undermine some of my rocks. I fixed this by putting base rock down and blow the sand off my coral during my daily maintenance. I still have lots of critters in my sand bed, I don't find they eat everything. I may consider buying some recharge for my sand bed if I don't see critters against the glass anymore. They will be even happier if I get my planned 230g upgrade. LOL
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