Looks great.
At this point I would let it grow up wards a few inches, then apply the tie downs again, and repeat the process, but I’m not in tent,
It’s def about what your space can take, and the flower time of an auto. that looks wonderful man. Great work
But yeah, let it do its thing now.
Don’t know,,, but might be calcium(give them some molasses and milk 2%), oh make sure your water has the correct pH. Maybe you already know but when I first started growing, I didn’t pH my first 4 grows and kept wondering why I was getting brown spots like that, then after I changed to proper pH water. It was 100% night and day difference.
I first started growing my strawberry gorilla autos (3) 45 days ago, one was a Runt, second one never really got big and the first one’s been doing great. That’s the one I’m breeding now. The runts great now, didn’t realize it, but because of the slow growth I was over Watering. I just let the pots dry out 65% before watered again and now they’re doing great… giving them Epson salt, Super Thrive, Molasses and all purpose plant food. I’m now basically giving them potassium and phosphorus, very little nitrogen. Two are outside now they love the sun and have really started growing Great the past 10 days.