"JEB" wrote in message
om...
SNIP
Actually, I've been scouring the countryside for the last week looking
for really thin shards of slate or shale to goo to the back of the
tank. I have an idea in my mind of creating a labyrinth look with a
thin rock wall. Onyx and black sand on the bottom, a frame that
covers the bottom of the tank so you can't see the substrate, you get
what I mean? Problem is, so far can't find the right rock. What
little I did find is too thick and heavy to go on the back glass.
Maybe if I could find a way to split it thin enough...

James
Check you garden supply or local rockery... "Oakley Stone" is a nice thin
quartz.mica gneiss that has worked for me. Of course at the time I lived in
southern Idaho where it is found. However, I see it here in California and
have seen it in El Paso Texas.

Bob