alot of people say to begin nutes with the advent of veg growth, moreover this can be caculated by your fan devoloping 9 finger leaves. you wayyy of, it looks like possible nute burn as your plants shouldnt be affected by toxicities/deficiencies until at least the 4th week of growth. you shouldnt be giving them growth stimulants or nutes at such a young age, start at the 3-4th week unless your plants are extremely fast growing.don't give them any more nutes and let them balance themselves out.