In article ,
Koi-Lo My impersonator is Roy TJ Hauer aka Roy. wrote:
Supplementary "food" then. But without test kits there is no way to know if
these "foods" are balanced or not, no way to know if there's too much P for
the N available etc.
Somebody hasn't been paying attention.
Try google for "estimative index".
Or
http://aquaria.net/articles/plants/barr-dose/
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