Difference between revisions of "K"

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Latest revision as of 19:53, 18 September 2011



Potassium (K)

Sometimes called 'potash'.

Potassium is an essential mineral micronutrient in all life. So aquatic plants require it in order to grow.

It is most commonly used as a plant fertiliser.

For example:

  • Potassium bicarbonate (KHCO3) also called Salt of Tartar or Kaligreen.
This increases KH without increasing GH and adds K and CO2. Increases pH.
  • Potassium carbonate (K2CO3)
This increases KH and GH. May increase pH.
  • Potassium nitrate (KN03)
This is very commoningly used as a part of the PMDD (Poor Man's Dosing Drops) mix to add nitrate to a tank.
  • Potassium hydroxide (KOH)
Used to increase pH without affecting GH or KH.


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