i dont know your schedule but for me i find feed then just water feed,water, feed, water you get it haha. honestly id just taper back on the nutes i think the problem is excess right so we wanna just water next time then maybe three quaters of the feed you were using before even half, and just monitor them daily and how there are reacting. worse case ontario you can flush them.......or cancel the cheque haha anyways thats my thoughts i had the same thing one time and i just dialed back the nutes hopfully thats all it is. good air flow and temp and humidity??