Nutrient deficiency or chemical burn can you help me identify

I had a plant do worse than that (that weird crumpling deformation sort of shit), once...I called it girl scout cooties, coz of the way it looked (like diseased). Like from germination (and I bet it was the soil balance being fucked up, how, I'm not sure). I don't think it's boron, I think it's related to pH and some extent either sulphur or magnesium (maybe both). I seriously couldn't figure out what caused it, but as the plant got older, it stabilized super well (and I used random shit on it, epsom salts a few times).

Hello Jay, I have looked at the product you used, it has 0.4% of Sulfur, and is compliant for use in organic gardening. Not shaking the bottle will just make it less efficient. I would suggest you to control the EC and pH levels of the soil by checking the water from the drain of the pots. You will need an EC meter and a pH meter. I’m suspecting that nutrients in the soil has built up into NaCl (salt).

Well they tell you to shake for a reason. Lol. Natural remedy if you ever need I'd especially in flower. 40 parts homoginized milk to 60 parts water. Spray at lights out or sundown and repeat if necessary. Will not hurt anything. Cheers

Hi mate, did you spray them with the lights on? You could have burnt the leaves in doing so. 4 parts milk to 10 parts water is a good remedy for PM. She will bounce back with a little THC. Good luck and happy growing