No, so far I'm just toying with the idea. How do I test for all that?
Thanks, Steve
Dan


"Steve Sells" wrote in message
ink.net...
depends on what is in that rock, have you tested them for Iron, and heavy
metals, for a start for toxic things... ?

Steve


"Dan Norgard" Can Volcanic Rock be safely added as a base to the LR in a
cycling tank ??

Thanks,

Dan