John R. Geiser (geiser@jhunix.hcf.jhu.edu)
Thu, 30 Jun 1994 10:44:11 -0400

Has anyone used RD20 on their CP? I use it all the time to cut back on
algae and smells around and on my orchids. What about Physan? I think it
is the same thing or nearly at least.


John R. Geiser geiser@jhunix.hcf.jhu.edu
Department of Biology, Mudd Hall Phone: (410) 516-7293
Johns Hopkins University FAX: (410) 516-5213
Baltimore, Maryland 21218