I want some decent looking slate for my tank but the LFS sells it a 2.25/LB. Pretty expensive IMO. If you guys know of any other kinf of decoritive rock that looks cool in a tank let me know.
actually you can test many attributes of rocks to correctly identify them, hardness, any reaction to say hydrochloric acid or other chemicals, the color of the powder you get off of them, sheen, luster, texture, yadda yadda yadda