I water the plants every 3-4 days. For the first 1-2 weeks, just water after 48 hours of standing. In the 3-4 week, I start giving NPK. + Dolomite lime. I bought calmag and gave it in the 4-5 week. I just don't know if it's not too little; I didn't want to overdo it. In the 5-6 week, I give NPK 15/10/25. The problem only occurs in the two largest plants, which are in a more advanced flowering stage. If it's not a magnesium deficiency, can I give it now during the flowering phase of these plants?