Blueberry cookies, velvet moon and cookie dawg

The cookie dawg video starts with the one on the right it is massive bit extremely leafly the second half of the video the buds look completely different. Not sure if its because these are done by seeds and maybe they showing extra sides of a certain parent on each plant? The second one looks more like the gsc side than the chemdawg and the other cookie dawgs I have here are also leafy looking but the one is in a more shaded area not getting as much light as the others. I know 9 plants in a 4x4 for a learner is pushing it a bit the plan was to get a 5x5 and pit 4 then 5 in the new tent but didn't manage to get it sorted so now I'm just going to gave to finish it how it is and be better prepared next time. I have a question if anyone can help: I'm growing in canna coco using canna coco notes. Last time I flused the blue cookies for 11 or 12 days just tap water nothing else. The problem is not even a leaf turned from green to yellow and barely just a few mm of the tips started to yellow when it was chopped down. From what I learnt on Google says coco either can have 0 days flush or 3-5 days flush but I gave it over double that and noticed when I smoked it made me wheezy compared to 5 different things which I bought and none of them made me wheezy. I have asthma and basically sold it all as for some reason unknown it made me wheeze. It was dried for 12 days at 60/60 cured for 6 weeks and tested it at every stage and it still had this effect on me. Please if anyone knows if this is related to the flush or maybe a build up of a certain chemical I just want to avoid it from happening again this time I was thinking to use another medium maybe soil and or a different nutrient brand to see if that helps 😀