Pineapple Kush Cake Automatic

The seeds are a homemade result of one Pineapple Kush Cake Automatic plant from my balcony which had around 160 seeds in it. So actually this is a test if they are any good and it turns out they´re perfoming quite good for the amount of defoliation, lollipopping and LST I gave them. They are like small bushy Bonsai trees and have a massive stem. This plant doesn´t get big any ways (80-110cm), but i tried to keep them as low as possible just for fun. I let the seeds soak for around 24h in a water glass and planted them directly into the soil which is 3x BioBizz Light Mix and 1x BioBizz All Mix (the left one in the back), all in 18L plastic pots. Another test was the germination in an AllMix soil from the beginning, which i have never tried before and was curious to find out if it´s not too much food for the seedling, and in the beginning she was performing better, but at sometime the other 3 were growing better. The smell is amazing, like sweet pineapple puke or something. I know the yield isn´t gonna be that much but its a little fun project for the first time growing Autoflower inside. Some of them had a slight over-fertilization and some slight light stress too but they coped with it , but i think in general they are looking quite healthy imo. I´m running a 19/5 light schedule. In the beginning I watered them with regular tap water with a PH of around 8.0 but now I´m using BioDown and I´m around 6.3-6.5. I've never measured the PH of the soil. Always watering when i feel the weight of the pots are getting lighter. I´m using (first time ever) Green Power 5in1 organic from S&R Organics combined with a vegan phosphor boost that i used 3 times until today. Every watering I use nutrients with maybe 10% less than the schedule and until I have a little drain. Twice they got my leftovers of BioBizz Bio Heaven on top. Its my third indoor grow btw but first time Auto-Flower. Setup: Aygrochy 100mm Wifi App exhaust set - Air flow capacity 350 CMPH 3x 5W clip fans (1 running low directed at the stems and 2 above) They are currently on Day 76 and according to Sensi Seeds they need about 80-90 days. I think the brown yellow parts of the leaves are a sign of too much nutrients and too much light? Correct me if I'm wrong Cheers