Were the clones hardened off when you bought them? If they weren't, and hadn't yet developed many roots, you might consider getting them under a makeshift humidity dome for a little bit longer. They look to me like they're drying out and not taking in much moisture through the roots. I'd also back the light off a bit more, since unrooted clones really don't need intense light... just enough to establish a good root system. And also be sure that you don't let the rockwool cubes dry out entirely, which can happen quickly under a MH. That's often a death sentence for new clones.
Mr. Clandestine Reviewed by Mr. Clandestine on . Problem in soil! Help Please! H=Answer if you grow hydro or aero C=Answer if you grow coco S=Answer if you grow traditional soil L=Answer if you grow soilless other than coco (Promix, Hyponex, SunshineMix) R=Answer if you grow in RockWool T=Answer if you grow in HydroTon D=Answer if you run any type of automatic drip system, including into soil or soilless E= EVERYONE needs to answer lol! Rating: 5