Mtrillanswered grow question 4 years ago Looks like nutrient burn to me. I’d give it a flush. Check ppm’s of water before and after flush. It will let you know how much food/nutrients is in there. If it’s high I would get it down to a fair amount which i believe should be no more than 1000 for the stage you are in, others may have their own opinions on that but It’s very easy to over feed with liquid nutrients. Be sure so skip nutrient feeding and do a cal mag & water feeding. 2x then one feeding of nutrients at half strength