On or about Sat, 09 Apr 2005 19:57:26 GMT, "WVNebJockey"
wrote something like:

I was wondering if I could
use a layer of lava rock instead of the scotchbright pads.

Lava rocks are cheap. Do it. Just throw out the whole mess at the end
of the season. I mean, it's not like watercress was people?
--
Crashj