So everything has been fine with this plant for a while. I've been battling bug problems, but I think I mostly got that under control over the last month. This plant has been healthy and no signs of any kind of defeciency up until now (6th week of flower, few trices turning amber). I've been feeding flora nova bloom every 3rd watering at 1/4 to 1/2 strength under 1000w HPS. Yesterday morning I come down to check the girls and just about every leaf on this plant was clawed (i.e., leaf edges curled downward and leaf tip curled down) and some leafs had actually flipped upside down. Well I had no idea what had happened since all the other plants were fine and I hadn't watered or fed in several days, yet the pot was not totally dryed out yet. So anyway, I flush with tap water (200 ppm) and then add back 1100 ppm flora nova bloom. Came back 10 hours later and all the clawing and flipped over leaves had corrected themselves, but many of the leaves had turned yellow. Oh yeah, run off of flushed water was 550 or so (.5 conv). Not sure whats going on, but if anyone can help I'd appreciate it. Thanks!