Hi
@Ciore I noticed in the video that the veins of the leaves are purple or dark, do you confirm? There is no yellowing in the leaves, it is different from the lack of Nitrogen or magnesium, it is a pale green, it makes me believe that it may be the last state of Iron deficiency, but with this Light it is difficult to have a notion, put the plant out of the grow and do some photos of leaves and branches with white light so we can all see better 👍