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What one dose does
PARAMETER
1 g / 100 L
Potassium
+4.8832 ppm
To raise potassium by 20 ppm in 100 L: 4.1 g.
Maker’s daily maximum: 0.28 g per 100 L (0.28 g for 100 L).
How it’s used
Dissolve first. Basic: 2 g per 20 US gal in 8 fl oz fresh water every other day for 390-410 ppm. Advanced: stock 5 g in 8 fl oz; each ml raises 1 US gal by 1.7 ppm; ml/day = ppm drop / 1.7 x US gal.
Sources
KCl + K2SO4. maxDose derived from stock-solution limit (10 ml stock per 20 US gal daily = 10 x 5 g / 236.6 ml = 0.21 g).