So I checked out the Plant Abuse Chart contained on here, and I think it may be related to my Res temp and flood and drain schedule. I drained 5 gal from res and added 5 gal of cold (balanced and nute) water. I switched from 7, 30 min floods to 6 floods alternating between 15 and 30 min.
I am probably going to have to get a humidifier and an air stone.
Will it create a problem changing the flood duration?
you dont need to change the cycle..thats not a problem..If the PH is good and PPm is good I then I would say its stress. they will have some stress going from soil to hydro.