Changed the solution today, 33 l water, and added 1,5 ml calcium and 1,5 ml mg. EC of tap water after adding cal and mg was 0,15. Added 75 ml canna zym , 15 ml R. And 110 ml canna substra A and B. EC of solution was 1,6, PH at 5,8.
Attaching new pictures, they are two weeks into flowering.