The twenty-second day:
Today I've started to stretch plants and damaged one barrel accidentally. Yesterday the first spraying was with Cannabiogen Delta 9 4ml/0.7l. Today it's METROP Amino Root 1 ml / 1.5 l. And I've already bought Metrop Amino Bloom for flowering stage and TDS-meter. It turns out I have a great water from the tap, it's 112 ppm, I think everything is much worse.