What kind of black stones could I find at home depot that are safe to use in my fish tank? I am not talking about gravel or anything like that. Talking about stones that could go in a 120 gallon tank to be used as decoration . I don't want to go out of my way to order anything online, I would like to go to Home Depot that is like a minute away from my house and buy it.
If you can also add a link it would be great.
If you can also add a link it would be great.