Looks like Burn to me, that nova is strong stuff...

I have also found the "suggested" mix on most labels is to hot and I back off...

I'd flush and recharge at half Nuts, let her grow a little and then remove the damaged leafs...
ZZTops Reviewed by ZZTops on . yellow edges on young plants I am using GH Nova Bloom Grow with well water with a hardness of 304. Mixing per label results in PPMs of 1200 plus. My ideas are nitrogen deficiency or nutrient burn. Any ideas? Rating: 5