turbos! ditch the hermits, they will eventually kill your snails..what kind of snails do you have? get a fighting conch, sally lightfoot crab and a cleaner shrimp..
yeah a sand sifting fish would be any type of bottom dwelling goby..yellow watchmens, yasha hasha (i think i spelled that right) 4 wheel drive goby -pretty neat, long fin sleeper, harbour goby, banded goby, any of the shrimp gobies, tiger goby - pretty neat, and a spottail goby-i have one with a tiger pistol shrimp. i rarely see my goby do his job which pisses me off. hes spoiled, he knows when MHs are on, chances are hes getting some mysis.
pistol shrimp and goby combos are pretty neat, unless your tank is in your room. my tank is across my bed and i hear my shrimp snap his 9mm all night. it can be rather annoying when you have work/class the next morning..