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>>I have some riccia. Riccia needs enough potassium and macros to grow well.
What is macros? Is it nitrate ions where it gets all its nitrogen from?
All help is welcome. <<

Macros are the nutrients plants use in the largest amounts:

nitrogen (N), phosphorus (P), sulfur (S), calcium (Ca), magnesium (Mg) and
potassium (K).

As opposed to micronutrients, which plants use in much smaller amounts. They
are iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), molybdenum (Mo),
cobalt (Co), and boron (B).

Robert Paul Hudson
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