thanks guys but can anyone tell what what the brown spots are that you can see in some of the pics????
I did not notice them the first time thru (lil buds got my eye instead lol)
but if you mean the row of dead leaf that goes right down the center I see in some pictures it would be hard to say from the pictures.
Can you take a picture of just an affected leaf and compare it to the ones here:
GROWFAQ
To me it looks to be Ozone or Mg def.
being I know you don't have an ozone generator I would have to guess Mg def.
Just add some Epsom Salt at about 1 tps per liter to your next watering and that should give them all the Mg they need.
Won't help the damaged ones but could prevent new damage.
Of course it could be something else, its hard to see,
Mg def starts at the areas between the veins usually but they look like its down the center vein.
Have you sprayed or "misted" them lately?
It could be burns from water droplets being it is in the areas where one would expect water to form droplets and sit there
rather than running off the leaves.