Apollo F1 - RQS

I bought a new pH meter with calibration solutions. After calibration, I realized I made a solution with too low pH. I used the same amount of nutrients for both watering. Earlier, I used a broken pH meter (before this, already showed a strange value. After this perfectly broken, do not show the temperature). I use PLAGRON lemon kick to decrease pH. I used 0.8 ml and got pH 6.56. Now I use only 0.4 ml / l and got pH 6.4. I made too low pH and made a nutrition lock like a Ca def for one girl. Ahhhhhhh, stupid me! Log March 18: Watering 2.5 liters each March 23: Watering 2.5 liters each