sick nutrient burn help

  1. M

    This happened over 2 days. Need help

    Hello. I am a beginner grower and need help. The 2nd picture shows the guy that got nutrient burn (I think). Even though I saw it wanted some nutrients, I added a regular dose and it got burnt BADLY (before it was a normal after this dose). I washed the soil but it was too late. Can this one...