Im not sure if this is a bug like mite infestation or some type of deficiency. starts with yellowing-browning and some of the leaves have tears. any help would be much appreciated. started on one plant but has been moving to others. im growing 4 different strains and its happening to all of them. Ive tried using the fox farms don't bug me but doesn't seem to be helping. is this something that could destroy my crop or is it fixable? Plants were started may 31st