Steve, your plants are burning, see the tips ? ... back off the nutes, use 1/2 doses, once a week ... DUMP the SuperThrive in the garbage where it belongs, probably the source of your burning (SuperThrive is helpful for rooting, and rooting only, otherwise kills plants) ... also, those type of pots are bad, they allow the plant to sit in water at the bottoms ... cannabis needs excellent drainage, above all else ... otherwise, good work, buddy :thumbsup: