Porcelain Tiles in a tank?

"Harry Muscle" wrote in message
...
Anybody know if porcelain tiles (like the ones that go on the floor)
are
safe in an aquarium. Sinks and such are made of porcelain, so the
porcelain
itself is fine, but the tiles are colored porcelain. Anyone know what
kind
of chemicals they use to color porcelain, and if this stuff would be
pretty
well encased inside the porcelain so none of it leaches out? I'm
hoping to
use these tiles for a background.

Thanks,
Harry

How about brushing a thin layer of a marine epoxy over them, to seal
whatever is or isn't there to leech.

Case closed ? ;~)
NetMax