Hi all ….on my 2nd ever grow and all started well but seem have some problem …strain is unknown ,compost soil mix which has feed to do plants for first 6 to 8 weeks so just feeding ph balanced water ,400w hps light ..room temp hovers about 20/23c,,,rh about 30/50%..watering only when seems needed..seeds were planted about 3weeks ago …1 on top left sprouted first and rest few days later all grew great then leaf colour changed and went dry and rough to the touch ..I did make a rookie mistake and misted plants with lights on so I may have light burnt them or is it to much or to little nuits in soil …attached pics for reference