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N-P-K
A few months ago there was a thread about someone that had come up with
research/theory supporting a fixed ratio of N-P-K that plants needed. The
study is also mentioned in Walstad's book "The Ecology of the Planted
Aquarium." I am trying to find the thread in the archives, and I have
looked all through Diana's book and cannot find it. Does anyone remember
what I am talking about? Something about critical ratios maybe?
Ben in SW Virginia
(anyone else out here?)