Cleanup crew help

[4127john]

Ok so I have a cleanup crew but I'm not sure it's enough

Two blue legged hermit crabs (baby's)
Four nerite snails
Cleaner shrimp

Is that enough I think I need more

 

[pairenoid]

i have a 20 gallon with 5 blue leg hermit crabs, and 4 snails(one died). I believe i have a nerite and nars or whatever its called but i can admit i dont think its enough. I recently bought a tiger conch but havent seen him since the day i bought him, they are supposed to be more than enough to clean the sandbed

 

[4127john]

Thing is I don't have a deep sand bed