Hwom91;3634492; said:I have A LOT in my 90 gallon tank. I got them from the river behind my house. No problems what so ever. I just put them in till it looked good. I have close to 2 dozen small ones. The only advice i have is if you get a big one it will move your plants and other decor around when it moves.
I have a few of them but Ive never seen any of them move anywhere.