i would add 150ppm of cal mag. the 200 ppm of tap water is mostly trace minerals. you could use that but let the chlorine evaporate or add something that gets rid of chlorine. Hygrozyme is the best additive i have come across in years. if its in your budget i would suggest it.hell no ur good i think... not totally sure but it looks like direct burns like u spilt shit on it...good luck i think they look nice besides that one leaf