Types of Base Rock

[shnabbles]

What types of rock do you guys use besides dead coral?
Has anyone bought rocks from like landscaper??
I was thinking shale rock would make for building a a nice stepped wall.

 

[clarkiiboi]

I don't know what shale rock is, but check out what your LFS is selling, that's where I got mine. Stay away from lava rock, it's not good for the tank. HTH some and bumps you.

 

[thomas712]

What type of rocks do we use, mostly calcium carbonate based rocks.
But also Tuffa, some even use lava rock.
As for shale, all I can rembmeber is that it looked terrible when it got algae on it during my fresh water days....so many years ago....