We topped the plants once and we do lst ever since. We also defoliate them 3 times during the veg phase, which took 8 full weeks. We stick with the recommended dosages of Canna nutrients for coco and we spray the ladies once a week with Plagron's Vita Race along with Sugar Royal.
Awesome buds with nice frost , i'd use sort of same method " coco hydroponics ", it works great with my auto's as well. your plants look very nice ;-) good work !