Well I am using coco professional plus and they are about 7 week's from seed
Looks like a Zinc problem and maybe some Nitrogen, it will be fine , replant it in some new soil and don't add any nutes for the first week or so. should green back up babies don't need the nutes like flowering moms do, Good luck, The more research you do here the better you will be takes time but well worth the searching. Happy GrowIt was fine yesterday and like this today does anyone have any idea what it is I thought it was nute burn but I am using biobizz grow atm but just 1 ml to just over 1ltr I was unsure if I had to use nutes every time I watered I've been using nutes then water then nutes an so on it this ok? View attachment 3409429View attachment 3409431