Lol after I had my coffee and doobie, I had a better look at this post, thing I see:
1. Itās only day 50, theyāll fill out but wonāt āstackā.
2. Did you top the plant? IME topping āmostā autos stunts their growth and spreads the auxins around confusing the plant and wasting precious days.
3. Just by looking at the leaves it seems you have low humidity, and you are border line over fertilizing, notice the start of creping on the upper half of the plant?
4. The top half of the plant is stressed from something, it may be too hot up there, autos like a cooler temp. Or download a light meter app and see just how much itās getting and the difference around the plant, report these finding back please.
5. Pull your hot air out of the top vent and let cool fresh air in through the bottom. It looks like your exhaust ducting is pulling from the lower half of your tent. Heat stress make most autos run like a coward.
6. Autos use nutrients at weird times, notice how they grow in spurts then fill, then spurts and fill. Then they pack on the buds and fill out throughout the plant fast, these are the times you need to make sure they have what they need, most problems people have is with underestimating the amount of cal mag these babies go through when building, adding dolomitic lime when building your media will seriously help with that.
7. A slow release blood meal, combined with a quality bone meal, kelp, green sand, dolomitic lime and some type of mykos are going to get you to the finish line much easier than what most choose to go with, I also use floralicious plus and bud XL depending on the strain. When Iām running autos that Iāve never worked with before I use my mix I just told you about, give zero food and watch and make notes on which days the deficiencies creep up, then when I run them for real, I can see when I need to adjust my schedule or top dress if itās an organic run. Hope this helps
