First Automatic Grow

I never defoliate ever and you can leave the damaged leaves, the plant will "recycle" the vital elements from them and then once they go completely yellow, remove them then. The yellowing is burning from too much nitrogen/over-feeding. Autos need much less feeding than photoperiod plants and if you are using the same schedule for your autos as you were previously doing when growing photoperiod plants, this is your problem. Autos can usually get by on half strength nutrients just fine.

That's called a cola mate. "Buds form together to make cola" that's all I can see. That and a few missed feeds. Also, drop your grow to match a 1-3 ratio. Top max can be in middle. Or even better feed that separately. So, she gets 2 feeds a week. And if needed. You can use your calmag as needed. I don't see a need for it in those pics, "but that's probably y lol", Your bud looks A okay to my. Leafs are a bit droppy. And overall she looks healthy. You had lissues with N i see that. But, now she's left pre flower she'll seek more bloom. And N "Grow" should be lowered.. so 1-3 1 part grow to 3 parts bloom.. .3grow-.9 bloom (these are just examples) of course you'll find your own ml/l depending on your ppm. You shouldn't have to exceed 5-700ppm with any feed. (Tap water included)