This article is from the Aquaria: Plants FAQ, by multiple authors.
PMDD (or Poor Man's Dosing Drops) is a do-it-yourself recipe, put
together by Kevin Conlin and Paul Sears as part of their experiments
to control algae. Much discussion an experimentation with the recipe
is occuring on the Aquatic Plants E-mail List, so you are likely to
get the most current info there. Semi-regular updates are kept on the
WWW at THE KRIB. Future updates of this FAQ may include sources and
recipes when things settle. :)
 
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