Rockwool cube issue after transplanting

Your problem is your lighting schedule, continuous light is not good for plants and especially not for freshly transplanted seedlings. Go to no more than 18/6, this being the optimum light/dark schedule for cannabis, both autos and photos in veg. Your plants need to "sleep" in general and this will help them to recover from the transplanting and they can not do this while being stressed by continuous light. All living things have a natural "circadian rhythm" which involves activity and then sleeping. Cannabis plants are no different and require a cycle of grow/sleep/grow/sleep, just like they have been doing for Millenia. Stating that Rockwool is sharp and somehow hurting the roots is ridiculous, plants have been growing in rough soil for millions of years without complaint! Give your plants the sleep that they need and I am sure they will recover soon, maybe even by tomorrow, after just one night of sleep. Hope this helps,.......... Organoman.