This plant appears as though it does not like nitrogen so a stop in nutrients followed by a flush was needed. After this only phosphorus or potassium nutrients will be used until the plants leaves recover to a more norm appearance. Other than this not bad but may have stunted the growth somewhat in terms of yields.
Looking good and progressing very nicely !! Good luck !
Please feel free to check out some of my recent grows (Tropicana cookiez/Venom OG/Banana Mango )