It looks like a potent girl. You should try pure coco coir next time. I have found it does the best alone. Coco coir holds 8x as much oxygen as soil. I have helped some Australian growers with Bio-Bizz in pure coco with excellent results. The pure coco, hand watered, can keep up with Ebb and Flow hydro in rockwool or hydrotons. Just make sure to let it dry out between watering, but you seem to do a good job of that. Over watering is the most common and most damaging mistake growers make.