Hey guys,
it´s my first grow using CalMag (I use Advanced Nutrients Sensi Cal Mag).
I´m on soil, day 25 of veg. My tap water has 1.3 EC, 218mg/L Ca and 43mg/L Mg.
I use 100% RO water and add around 50% of recommended dosage CalMag so I get around 0.3 EC.
Before, I used a multi mineral...