One other thought for nutes/ph vs lighting......he said the plants were growing great guns....VERY common with nute burn since the line from one to the other is not too far. One minute they ARE growing great....then they are burned.

With lighting I don't think they would be that green and growing that well.....the heat of the light would have caused bleaching etc....

These are my thoughts. Good Luck.....I really do mean that.
Weedhound Reviewed by Weedhound on . Leaves curling up at edges Hi, I've been growing this Jack Herer from seed and they're just coming up to 2 weeks in veg. Its a hydro setup and they are under a 400W metal halide which is 11 inch from the tallest plant. They have only just made it to full strength nutes after spending the first week getting 1/4 then 1/2 strength before hitting full strength a few days ago. The problem though, is that most of the plants are showing this leaf curl in varying degrees. It starrted on the lower leaves but now new Rating: 5