Cloning Barneys

So one of them looks strange, here what happend all are clones and where really long into veg, i did raise the nutrients. I changed the room from q5 to q3 both on 25%, first guess was heat or light stress, but i dont think so anymore because lamps are about 60cm above plants now and heat is highest around 24 C. So only thing happened was i had the lights 24hours for one day, after this it startet to tacoing the leaves. But now it looks like more problems