Northern Light (with Timelapse)

Hi there physicist, so i see you're on quite an "intense" light schedule. so what happens is the plant uses more Mg to regulate photosynthesis and what you're seeing now is a Mg deficiency. You can probably double or even triple your calmag , just reduce your N by a corresponding amount. If you do this the problem should stop spreading. You can also make a calmag spray 1mL/L twice a week because absorption is better through the leafs. If it keeps getting worse and you're already doing this , the only way is to lower the light schedule. But normally it should recover. Hope this helps ! 🚀

I would do what gmslave said and check your runoff to see what your medium is doing.

How often are you feeding your ladies with 750 rpm? Once, twice a week or more. if it is more you likely have some lockout happening. Check your runoff waters ph and ec and make sure each one is in the proper parameter for a soil grow. To high or low on ph can cause lockout and to high an ec can cause lockout