Runoff pH is high, plant is not vibrant green and there's a leaf deformity.

Well since it's my first grow I'll learn from this for sure, thank you growmies for the feedback, I appreciate it a lot! I've double buffered the coco and then flushed to lower the ec (I used coco coir bricks). I couldn't get the pH down though. I literally flushed the coco for like 12 hours continuously to try and get the pH down but it wouldn't move any direction from 6.8... pH pen is working fine though so I guess it's just trash coco. My solution going in is always between 5.7 and 6.1. Regardless of what I do, the runoff pH won't move. I just hope they survive this run and I most definitely won't be using the same stuff anymore.

Yeah they’re right.. if you didn’t buffer coco that could be the issue. Even bag coco often needs buffering - especially with finicky plants like autos. I can already see very minor signs of mag deficiency

That is high for coco. Remember to buffer your coco next run. Just ph your solution down to the lowest level 5.5 and give enough that you have plenty of runoff coming out and the ph should lower after a while