Feel like a celeb is replying to my postlooks like a magnesium deficiency. i grow hydro though so wait for second opinion. i fix mag def with epsom salts
I thought the same! Been giving it a very low ppm spray with a chelated calmag foliar for the last 3 days and not much has changed.
https://rolfesagri.co.za/wp-content/uploads/2017/11/ProNuTech_Calmag.pdf
Gonna keep at it though and see