So the dq seem to have gotten nutrient lock a bit. I think it's the guano and castings I mentioned earlier. It builds up on the roots and I can't molest them as much... The leaves did the claw. I drained them fully, filled with tap and swished about till the water came out clean then gave a nice new nutrient solution at about 500 ppm. They bounced back in a day but there is some leaves that won't recover. It will likely impact my yield only slightly as they haven't started full flower yet. Fingers crossed. I suspect the roots got a bit clogged while they were chugging for the last week. Plus the additional 600 watts was pushing them to the max. I turned the 600 off because honestly it was overkill. Like the surface of the sun in there and I don't want to stress them any further. Also raised the light a bit. They seem much happier.