Need diagnosis. Not quite sure which deficiency.

First time with this problem. She is a Jack herer clone mother. The problem just started within 2 days. 1 foot under aircooled 400 watt Mh on 18/6 light schedule. What is the diagnosis guys? Oh btw just started using AN Jungle juice so that could be causing problems... Thanks for any input!! Fyi she is drooping due to recent watering.

did you happen to get any water or nutes on the leaves when watering? Since it is only on a couple leaves, that is what it looks like. leaf gets wet, then gets burnt.

I'm gonna side with benelli. Do you have a point and shoot surface thermometer? Curious about your leaf temp at that distance, seems kinda close. I veg with 400 watt led and keep it about that distance, never had any issues with water burning my leaves even after drenching her with neem oil foliar spray.

If that's not the case it most closely resembles phosphorous deficiency, but that would effect the lower fan leafs across the whole plant as all the growing shoots would experience the same deficiency.

Red stems and stretch under MH tells me its phosphorus def

I dont know what JG is and I grow in coco

All the best..

Bubble