zedron
New Member
I obtained a salt setup from a friend and I am converting it to fresh. With the setup are these big pieces of porous white rocks. All the rocks are now dry so if anything ever lived in them I am sure it is all gone. I just want to know what it is or was and what it can be used for so I can get rid of it.
Below is a picture of a few of the pieces.
Below is a picture of a few of the pieces.