Sometimes the plants growth will exceed its ability to compensate(Plant respiration) resulting in deformed leaves. Too much air movement is as bad as No air movement, slow the fans abit , or add 1 if necessary.
My advice would be to go DWC, next time, also let your plants veg for a while longer, as well.
Get "RapidRooters " in lue of "Rockwool"... If height is an issue then tie your plants down to control the height.
your plants look over fertilized to me ... the root system doesn't look...
Give em 2ml of "SuperThrive" in a gal.of h2, in your next watering. ONLY water plants when they need it. Pick up the container after you water it and feel the weight... then in a day or 2 (depending on the temp of your growroom) pick up the contatner and feel the difference in weight. If it is...