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Before we go any further, I would recommend a different hydroponic solution using chemical compounds that are easier to obtain and mix.

CaNO3 150.0 g
K2SO4 11.5 g
KNO3 52.2 g
KH2PO4 34.8 g
MgSO4 112.0 g
TE 10.0 g

( TE Plant-Prod® Chelated Micronutrient Mix http://www.plantprod.com/catalogue/04Micronutrients.html or Plantex CSM+B )

Preferably storing CaNO3 and MgSO4 separately while dry.

When mixed with water, use TDS Total Dissolved Solids meter to create concentration of 2500 uS micro Siemens for large plants or 600 - 800 uS for emersed aquatic plants. Approximately 1 tbs for large plants or 1 tsp for aquatic plants, per 10 liters. Change water every 2 weeks.

Edward
 
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