hey guys I found a bunch of these nice looking rocks and I was wondering if these rocks are safe for the aquarium. A picture of the rick is in this links.
http://z.about.com/d/geology/1/0/g/V/granitesalinia.jpg
http://www.scottsdalecc.edu/geology/images/igneous_rock_01.jpg
so tell me if there are safe or not. thanks
http://z.about.com/d/geology/1/0/g/V/granitesalinia.jpg
http://www.scottsdalecc.edu/geology/images/igneous_rock_01.jpg
so tell me if there are safe or not. thanks