CalMag deficiency/ Nitrogen toxicity/ Wind burn?

for nitrogen tox i would add some horticultural MKP (0-52-34) at say 50-150ppms or just potassium sulphate (0-0-53 s17) at half the dose of MKP , start at 50ppm increments into your diluted res. for cal def if soil i'd add some gypsum on top for a soil drench or if hydro add some cal/mag or horticultural calcium nitrate ( 15-0-0 Ca19 ) with magnesium sulphate at half the dose of calcium nitrate, just remember to add the MKP at the same or the pot sulphate at half in ppm as calcium nitrate( or calmag) to bump up the p in th p:n ratio