On Jan 4th, G Alexander posted a graph from a study by Dr. Shimek's showing the potassium concentration of various salt mixes vs. NSW. A quick overview of that graph indicated that the potassium concentration of the various salt mixes was approximately 80 - 110ppm less than the NSW concentration.

Premising a 100ppm potassium deficiency in a 200gal system, one would need...

100mg/l K+ x 200g x 3.8l/g x 1 gr/mg = 76 grams of K+ to achieve NSW conc.

Given this amount, I was wondering what the potassium concentration is of the K-balance, and whether a 250ml bottle was sufficient, if dosed regularly, to bring my tanks K levels back to NSW concentrations???

Jeff

Premising a 100ppm potassium deficiency in a 200gal system, one would need...

100mg/l K+ x 200g x 3.8l/g x 1 gr/mg = 76 grams of K+ to achieve NSW conc.

Given this amount, I was wondering what the potassium concentration is of the K-balance, and whether a 250ml bottle was sufficient, if dosed regularly, to bring my tanks K levels back to NSW concentrations???

Jeff

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