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Re: Riccia

    * Subject: Riccia
    * From: "Wayne Wah " <tswah at mbox3_singnet.com.sg>

Hello everyone,

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.

Wah Yi Chen from Singapore.

Macros are mineral nutrients that plants need in substantial quantities.
They are nitrogen (N), Phosphorus (P), potassium (K), calcium (Ca),
magnesium (Mg), and sulfur (S).  Micros are mineral nutrients that plants
need only small amounts. They are also called trace elements.  They are
iron (Fe) boron (B), manganese (Mn), copper (Cu) zinc (Zn) chlorine (Cl),
molybdemum (Mo) and nickel (Ni).  Of the micros, most aquatic plant
gardeners only have to worry about adding iron and boron.

Plants can get their nitrogen from a number of soluble forms, including
nitrate (NO3-), nitrite (NO2-), ammonia, (NH3+), and urea (CO(NH2)) Of
these, nitrate is much less toxic than the others to fish and

Hope this helps!

Paul Krombholz, in cool central Mississippi.