It's good you got your PH down. If not dropping something on it it may be the rockwool staying too wet. At least the rest are alright.
LOC NAR1958 Reviewed by LOC NAR1958 on . Newbie needs help!!! One plant is dying... Hey gang, I recently set up a closet grow room. It's a small area. I'm using 150w HPS with a DWC set up. I planted Bubble gum and one plant just took off. It was 4x the size of all the other ones. And now, it's having major problems. At first, the leaves started to curl. Thinking it was a magnesium deficiency, I foliar sprayed it with epsom salts. That just made it droop. Now it's turning yellow and the leaves are drooping and curling all over the place. I was running it at a 6.5ph Rating: 5