I hate LFS's because of that exact reason. You'd think that since they are dealing with
live animals that they would know exactly how to care for each one. Why do we get all of these opposite answers from LFS's.
It would be different if the product we were purchasing from them wasn't going to die when they give us incorrect information. IMO I think a sand-sifting star would do better in sand (hence the name "sand" sifting) but there are always exceptions. I also believe that they will do best in a well established tank where it wouldnt matter much if they were eating a lot of sand bacteria since there is so much to begin with anyways. Like GreatfullReefer said:
(kind of like if you dont want a goat to eat your grass then dont get a goat)
But if you had so much grass that it would grow back before the goat could eat all of it, then you could get a goat.
Just my 2 pennies!!
P.S. I dont know if stars do this, but maybe they are eating the bacteria off of eachother??? :thinking: