JeremyManswered grow question 4 years ago I hope linking to other sites here is OK. Referencing this site https://howtogrowmarijuana.com/marijuana-symptoms/ it looks like Phosphorus Deficiency. The ability for the plant to uptake Phosphorus is dependent on PH, Temp swings, ect. Is your temperature gauge able to log or track min/max? Your PH and overall temp look good. Whats the PH of your run off? Might have some nute build up in the soil?