Does anybody have any pieces of rock, free/cheap

[Brownsnoutuk]

Im looking for some flat pieces of rock to make some caves etc..

Enough for a 29gallon.  Free if possible.

OR does anyone know where i can go dig some up/pull some out of a river?
Also if i find some rock in the wild, how do i prepare it for my tank?
Would i scrub it first, then bleach it, then rinse it?

Thanks
chris

[Ramius]

Re: Does anybody have any pieces of rock, free/cheap

A link I found, have to scroll down on this one to see the replies

http://www.guppylog.com/story/2006/6/27/202744/232

[eklikewhoa]

Re: Does anybody have any pieces of rock, free/cheap

I would boil them, personally.