I'm suspecting this is from overfert but not really sure. Plant has been vegging for 3 weeks in soil under a 400w mh/hps. Fed 4 days ago with 5ml of FF grow big per gal of water. Yeah, strain is Nightmare Kush aka The White. Got trandplanted into 2 gal container about 3 days ago. Problem started about 2 days ago. Edges of the leaves curling up and the yellowish spots. Dont have a ph meter because I only run a few plants and grows have been pretty trouble free until this run. Any input or advice would be greatly appreciated. Thanks!