Grow Fam .. Need your help, it’s getting worse

If proper nutrients were available to the plant and ph is in good range, stable and not drifting and environmental condition perfect, this would not happen right? Recheck everything. Light distance and temp to rule out heat/light stress cause this is apparently affecting the top growth but more specifically the new growth making it look like an immobile mineral deficiency. Why is it iron deficient you ask? That’s what you need to find out. Recheck all conditions. Are you using RO? Need to mineralize that. Did you over fertilized causing lock out or was that from ph lock out. Check check check. When in doubt change out your reservoir in case your mixology was out. Start fresh and give it a week. Hope this makes ya think. Cheers 🍻