So, i want to re-design my aquarium. I am thinking some kind of natural rock, or maybe uncut slate? I'm not sure what type of rock's are safe for aquaria so i've come to ask. 
I'm not even sure if slate is 'ok'? Sand stone? Any other stone?
If i can't find any natural rock i'm willing to settle for branches...
Thank you, Adam.
I'm not even sure if slate is 'ok'? Sand stone? Any other stone?
If i can't find any natural rock i'm willing to settle for branches...
Thank you, Adam.