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Okay.... I finally got it right!!! I was able to figure out that GH FloraBloom most probably doesn't contain 1.5% Magnesium because the only water soluble source of Magnesium that is suitable for hydroponics is derived from Magnesium Sulfate. You can check that fact on Wikipedias solubility chart. Magnesium Sulfate Heptahydrate (Epsom salt) or just plain old Magnesium Sulfate will always be heavier with Sulfur than Magnesium. A 4:3 ratio approximately. So, when you make a mix containing 1.5%...
GH FloraBloom DIY EXACT
GH FloraBloom DIY EXACT
from Hydroponics / Aeroponics https://www.rollitup.org/t/gh-florabloom-diy-exact.528636/