First time coco grow

Day 71: The left plant is starting to show some of the same problems I see on the right plant so I am going to flush her too tomorrow. I think that it is mostly due to the light stress from before, it is just showing now, but to be safe she gets a flush too @5.8 ph Day 73: Hmmmm... It is difficult to see if the problem persists, or its just the affected leaves that will not recover. Should I remove these "sick" leaves? - They seem to be happy abut the new light intensity as some of the problems is defiantly improving like the leaves are praying, and the sides of the leaves does not seem to bend as much. I have been very gentle with the feeding, after having done 3 flushes (15L at 5.8 ph) and have updated my feed schema above Day 75: I am sure that I had some light-stress, and it is over now, but I don't think I see a full recovery.... I think I see the leaves to get more yellow but it might just be as mentioned before, that the sick leaves won't recover but I do not know what to do from here. Should I just leave them, or do you growmies have any suggestions? The grow has, and is, very slow in my opinion but I still see progress UPDATE: I decided to doe some heavily defoliation. It might have been too much for the left one. I haven't done much defoliation, but they where so bushy, that I thought it was necessary to get light on all my buds. Also I wanted to get rid of those "sick" leaves. I think I am on the right track, and the symptoms I see are old problems now