I had it once, like four years ago. I read it was due to tap water toxins like fluoride, after that I cleaned the soil with distilled water also known as Rainwater️️️ Then I just kept on, I did add liquid humate part one and two or (humic,ulmic part1)(fulvic part 2) its written that it chelates or is, I don't know but some how detoxs, due to big words by big word, but after all was well.