Buon giorno weed doctors, did anyone have similar uniform chlorosis at the top or maybe knows what's up? What could be the reason and the solution? Th

Iv had that and put it down to the top being to close to the light. Spent ages trying to figure out if it was a deficiency but as the rest of the plant that was much further away from the light was fine and didn't get like the tallest cola it must have been my light. I'd monitor for a few days and see what the rest of the plant does.