Malibu pie Coco Quantum board run

I started to notice some leaf curl on the top growing tips, now ruling out overwatering with proper wet-dry cycle, also flushing the plants with lower ec nutrient solution. 1.5ml of Canna Coco A+B seems kinda high with 0.5ml Calmag, gonna cut back on the A+B from now on. Some of the plants starting to show pre-flowers, mostly starts of male pollen sacs. Im hopeful to receive the Ebb Flood system soon, and see what the end result will be with the plants sexes. Day 44 going into flowering. Plants are now sitting on top of the ebb flood table, gonna start using this for waterings now. Culled one male out of the bunch. Still waiting for a couple plants to show sex.