i have 8 clones with the same feeding but 2 of them are experiencing some white specles and drying of the lower leaves portion with curling at the tips throughout the plant and some warping on a few leaves. its not mites or heat or lighting. i dont quite know whats going on with them.
Nute poison!...flush with ph 7.0 water 3 times the volume of the pot and feed at 1/2 strength a week later