Still need to remove my old ballasts and the last hood
That lighting seems a lot far from the plants to me. My 1000 watt bulb is closer or they start to elongate.
I am in the end of my second indoor grow with seeds. For the next run I decided to start double the seeds I will need in the end. Some won't sprout, some will grow weak like those on you pic and I will just kill them and then 2-3 weeks into flowering some will not flower like the rest and I will remove those also thus leaving by the exact number of tops my space can fit.