Amok’s 2nd grow GG#4 Auto

So going over the calendar and photos, September 19th would be first day of veg. That being said today would kick off week three of veg! Dialing in my tent environment and finally got my heater and dehumidifier set up with my controller. I am aiming for around 78f and 55-60% humidity. My lights are running about 400ppfd. So far so good after a few hours of playing around and letting things settle. I am hoping to get my C02 bag in a week or so this way I can boost some temps and lights. I will try to update daily when possible. Day 16: mixed 6g’s of nutes at 652ppm and a PH of 5.9. Plants are growing albeit not as fast as I hoped or compared to last grow. But they are growing so that is good. Did a little more LST on both plants this morning. I am really focused on keeping them as low as possible. My last grow got way to tall for the tent. Trying to not repeat that. Day 17: I seem to have a slight nutrient issue with Amy the runt. Her lower leaves are curling downward and I am seeing small yellow spots become visible. They also seem to be becoming a little brittle. I am assuming this is an N overdose? So as a precaution, and I don’t know if this will help, but I flushed her with a gallon of PH’d RO water. I also diluted my reservoir from 650 ppm to 590 in hopes of helping her and not hurting Rose the other plant due to both of them sharing the same reservoir. Any ideas, answers, questions on this? Day 18: Amy is recovering and today will be a test day to let them grow not much to do. Day 19: still not much to do so I let them be after a little LST Day 20: I have to work today so maybe I’ll clean the reservoir out and stuff later tonight. Say 21: Last day of week 3!!! My last autos started flower in week 5 so I am getting excited. Checked the reservoir and it is holding well at 595PPM and a PH of 6.25 (keeping it a bit high for more calMag uptake for Amy the runt). Amy is still showing signs of pretty good new growth albeit on the small side. But she is hanging in there. Rose on the other hand is a thickum hard to train her so far. So I think I’ll leave her be for a bit and then do some bending and bondage. I do plan on scrogging these as heavily as I can during stretch. This is reported to be a 65% sativa so I am expecting some height during early flower. I took some runoff from both plants today as both the trays seems pretty dry for just being watered 30 minutes prior to me checking in on them today. Rose runoff was 700PPM and a PH of 5.7. Amy was a bit different with 620PPM and 6.0PH. I flushed them really well with solution to try to get them evened out. I also raised my fertigation times from 1min to 1m 20sec. I am hoping to get a bit more runoff doing this and keeping them a bit more stable.