So i noticed the first signs of DRAMATIC leaf colour change yesterday on two of my Mystery Seed/Juicy G plants. My inital reaction was that the 42w CFL bulbs were too close to the plants and burning the leaves, but this discolouration effect only happened on 2 of my 8 plants and of those two only one or two lower leaves were affected.

To compensate i raised the lights another 4" from the plants, but when i returned today the yellowing edges have carried to another set of lower leaves on the same plant! I would usually reference my grow guide, but its currently on loan to a friend.

If this were a nutrient deficiency over fert burn wouldn't all of my plants be showing signs of this? My Jack Herer plants have not shown any signs of discolouration...

What could be causing this? Any remedy suggestions?

In the meantime... i'll be reading endless threads till i find out...

Thanks.



http://i494.photobucket.com/albums/r...r/IMG00609.jpg

http://i494.photobucket.com/albums/r...r/IMG00608.jpg