hydroton overwatered dripped rate sick plants

Hello does anyone know what's wrong withthese plants for the past week the leaves have been drooping but it has improved since I didn't water them I believe, and todaythey are twisting at the top of the plants moved the fan further away from the tops I haven't watered for about a week as it...

Hey guys an gals! Sorry for the lengthy post, this is my first and want to give as much info as I can. I need help ! This is my second grow coming off the back of a successful first go at a DWC. I encountered many problems when running DWC but managed to overcome them to a nice harvest. I...