Plant problem

[Man4dog]

3rd week of grow in coco coir. Strain ‘24’. A high CBD strain. 3rd grow. Under 400 w hps. Temp 73. Humidity 17%. New growth has come in paler with curled down edges. I’m thinking it is a root problem. Old growth Is healthy. I’m thinking the roots are not developed enough yet. Should I cut out the new unhealthy leaves and stems? Also let me know if I’m way off base.

[JohnEmad]

Hi Man4dog, If you can post some pics under normal lighting and any other info that might help with diagnosis.