need more info. but i would start by flushing your soil with fresshwater untill alot comes out the bottom. rinse the soil for about 5 minutes. then after that if they stay burned you know its not the ferts
It is I had to go to worker and my timer came on and she had grown into the light... and those leaves are burnt I dont know if i should cut them or what 10 days into flower dont want to stress her to hermie