On Saturday, 14 October 1995, David Webb wrote: > I'd personally be more worried that the copper in the malachite green would > affect your plants. Despite its name, Malachite Green contains no copper. It's an aniline dye that is, in my experience, safe for plants at any concentration that won't kill your fish. -- Kevin Conlin Montreal, Canada "We're Canadians. We HAVE to be polite"