Dosing Potassium
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Old 05-17-2004, 04:32 PM   #1
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What are your dosing parameters for dosing Potassium?

I have been using Greg Watson's suggestion of dosing twice as much K2SO4 as KN03. Chuck calculator has it in there at a target of 20 ppm as Tom Barr mentions many times but measuring it is the problem and knowing the uptake is also unknown.
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Old 05-17-2004, 04:53 PM   #2
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I dose KNO3 and K2SO4 in about same quantities, to avoid possible K overdoses. If I stop dosing K2SO4 as some suggest, my swords develop nice big rotting holes. I am always trying to dose the minimal amount rather than the optimum, so Gregs advice might be sound.
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