No don't be silly my dad did when I was on holiday I told him cause I could not feed them at the time I said dad put 20ml of coco a+b superthrive and some Epsom level tea spoon got back 5 days later went to my grow room dead burnt shruvled you name it the plant had it looked on my. Feed shelf and what was up there tesco table salt 30planrs down the pan good job I had clones only put me back 4 weeks dad was embarrassed and apologetic for it but that's. How I know about the. Salt