Critical orange punch, round 2.

Hi guys! So I skipped adding the seedling phase to the diary as nothing really interesting happened. So I'm in week one of veg and as you can see from the video/pics things aren't going too well. I've got some serious yellowing and curling on some of the leaves and I'm working really hard to pinpoint the problem. It looks like a nitrogen deficiency but I don't think it is as the ec is fine and the nutes are all in range. Possibly an over feeding issue, going to decrease feeds to 1 per day for a few days to see it that's it, the roots are healthy and white though so I don't think its that but they are a bit droopy so maybe. The only obvious problem I found was the ph in the reservoir was way out yesterday at 6.6! How it jumped that high I don't know as it was dialled in at 6 2 days ago. Reduced it to 5.8 again today after adding some fresh water ph'd and dechlorinated. The heat and humidity are fine so It's not light or heat burn. Anyway hopefully this will get fixed asap and I can concentrate on getting these ladies healthy and ready for topping as they're all going to be mainlined. Thanks for reading, have a good week.