Originally Posted by
sflasurfer
scarlet crabs are notorius for eating snails, if you stay away from them you are generaly ok. IMO a great scavenger and and kind of cool looking star is a serpent star many varieties of color, they say you can have 1 for every 10 gal. I have 5 in my 55gal, there is no teritorial battles and i have very little detritous on my sand bed. Saying this I consider myself a novice so seek advice from more experienced people also. good luck
Usually when people have a problem with hermit crabs they switch to scarlet for the reason that they are so passive and do not attack anything unless they are starving. And on that note all hermit crabs (to my knowledge) are notorius for eating snails because that is were they get there shells from, or if they dont have enough food. But if you provide them with enough extra shells and feed your tank enough that they should have enough to eat, then they most likely will not kill snails.
Most of the more aggressive hermits are opertunistic and will eat a snail if it can.
PS Not trying to be mean or anything but just wanted to set it straight.
Oh yeah, as for the serpent stars that is a great suggestion i have heard they are wonderfull, would be a great addition to a 20g tank (very active)