ok so i just transplanted 9 plants into larger pots, also i just added my new light which is a 400w hps.. i have it about 3 feet away, i also have a small fan blowing on the plants about 2 feet away, on a few of my stronger plants they are drooping towards the edge of the leaves and the center on them is beginning to yellow alot.. sorry i can't provide pictures but any idea what could be causing this?
bump for you...i am having the same issue w a 250w hps at 24 inches. some of the leaves are really green but some of the lower leaves are turning yellow. how old are your plants? maybe an expert will chime in
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could be just temperature shock. yellowing from the center vein outwards? use room temp water. if thats the prob, not to worry, they'll green back up in a day or 3.