Day 51 : Watered with 2.5L each lady. I added as always 1 co2 tab per 4.5L . Also i added nutrients. The next one will be pure water. She stopped vertical stretching. Now her buds are getting bigger day after day.
Edit (Day 56) : Watered 1.5L pure tap water of 7.5ph and 360ppm. No co2 today. Just pure water with 0.5/L Cal-Mag. Buds are fattening nothing else.