Hemp nutrient deficiency

Potassium deficiency -- around serated tips and starting at bottom. Looks like coco. Check out watering habits on cocoforcannabis. Make sure you are doing it right. I'm a fan of a little more exaggerated wet-dry cycle early on than they instruct. But a properly constituted soilless substrate can handle more frequent fertigations like they instruct.

Looks like nitrogen deficiency. Could be caused by too little nitrogen or too much phosphorus locking out the other nutrients. Without a diary and nutrient line up and numbers it’s hard for me to diagnose exactly. Best of luck with your grow.

What's your temp and humidity? Check your VPD, looks like overtranspiration to me.