Hey everyone.. I have a 10 gallon tank with 1 small blue apple snail, and 1 small ivory apple snail.. my snails dont really move at all but they do a little bit.. could it be because they dont like sand?? i have sand in my 10 gallon... i have 3 red eye tetras, 4 zebra danios, and 1 male betta... they all are doing fine except for the snails.. well anyway i think my ivory apple snail is dead.. he is out of the shell... and when i reached in to grab it to see if it would go back in the shell to make sure it was ok, it didnt go back in.. is it dead??? someone please help!!