No idea whats wrong

[Giro2007]

Hey every1, having some trouble with my lr2's. There is some brown spots on the leaves that are quickly spreading across them, its only on the biggest fan leaves no probs on the buds. The ph of the water is neutral 7 (or so the bottle says). The other pic is my big lemon skunk aint she lovely?

Giro2007 Reviewed by Giro2007 on 03-11-2008. No idea whats wrong Hey every1, having some trouble with my lr2's. There is some brown spots on the leaves that are quickly spreading across them, its only on the biggest fan leaves no probs on the buds. The ph of the water is neutral 7 (or so the bottle says). The other pic is my big lemon skunk aint she lovely? Rating: 5

[stinkyattic]

Given no useful information, no one will be able to make a diagnosis.
Here...
http://boards.cannabis.com/plant-pro...anted-one.html

Tell us about your bottled water. Is it drinking water? Is it tonic water? Is it distilled?

Fill out the form. I think you've got a problem with your water source, either pH or sodium levels, and that looks like a soilless mix... again, you NEED to be checking pH on the medium until you are confident that its behaviour is predictable.

[Giro2007]

thanks stinky, the water is drinking water and the soil doesnt tell you the ph it just says basic potting compost. could it possibly be humidity? ive been misting the 2 lemons and maybe thats caused it?

[stinkyattic]

Gotta fill out the form.
Drinking water has other shit added to make it taste better. Sometimes the sodium content is dangerously high for cannabis. Plus you don't know if it has correct calcium and magnesium levels. Switch to tap water unless you have a compelling reason not to.
Stop misting, because what you may be inadvertently doing is called 'reverse foliar feeding'- you can FEED a plant nutes through its leaves... did you know you can also TAKE THEM AWAY?

Get on a program of correct pH for feeding, between 6.3 and 6.8, with correct nutes, and a known calcium source, be it tap water or addition of calmag plus to distilled water. And no more drinking water; save that for yourself.

[Giro2007]

I think what i'll do is go back to tap water for the lr, they seemed fine on that with my last grow but i'll continue to feed it to the lemons while they veg coz they seem to like it but change for something else during flower. Must say stinky, read many of your posts and they have defo helped me out. thanks for all your advice

[stinkyattic]

It may just be that the lemons are a bit hardier and taking longer to show troubles.
Anyway, thank YOU; I'm glad you've found at least SOME help in my posts, lol!