Hello. We noticed this on our plants. Happend suddenly not sure what it is. I went from organics Agrathrive one was for grow and one for bloom. When we started to use bloom then the next day I had to clean my fish tank and used some of that water on the soil too. Now their looking like I caused a deficiency of some sort also looked like leaf hoppers might have been on them.... Any ideas sure would help. We used cal mag tonight and watered them.