Hi there, OK this is a bit of a long story. I've been growing for a few months now without problems, until now. I was about 3 weeks in to veg and light hazy white spots appeared, this then turned into a rusty colour unknown thing that worked its way across the leafs. The middle aged to older leaves. In some cases there were small holes through the leaves. I pruned off all the affected leaves and flushed the system. After a few days the problem slowly started coming back. I'm still holding the plant in veg until i sort this out. The plant has now been vegging for about 6 weeks and in the last week the leaves have gone light yellow, lime green colour and a couple of days ago I've noticed the leaf edges curling up. Please anyone who has seen this before help me out, its terrorising my plant and I'm smoking my self stupid!! . I've included photos which cover the whole period up to present day. I'm growing in an NFT system, ph is permanently between 5.8 and 6.2 (obviously I'm aiming for 5.8-6.0. I'm using canna aqua veg, temp is between 70f and 75f and humidity is floating between 55% and 75%. I also recently added canna trace elements to the nutrients but hasn't noticeably done anything. I must confess to not forcing fresh air in or forcing stale air out. I've just got free flowing air through 2 vents (i don't know how much this will affect the plant of if its enough to do this?) All help appreciated.......

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Cool, you started a new thread, let's get this all in one place.

__________________
"Careful what you carry- 'cause the Man is wise- you are still an outlaw in their eyes" -Steely Dan
"Multiple pieces of anecdotal evidence do not equal scientific fact." -Rhizome
"If the Queen Bee ain't happy... the hive isn't happy!"-Dutch Pimp
http://boards.cannabis.com/basic-gro...e-harvest.html<-It's a grow guide! Enjoy!
http://boards.cannabis.com/plant-pro...hy-how-do.html <- all the boring stuff about soil chemistry you never wanted to know
http://boards.cannabis.com/grow-log/...ml#post1837597 <-how to make canna caramels
http://boards.cannabis.com/grow-log/...ml#post1820481 <-illustrated cloning guide permalink
Contacting Her Dankness: stinkyattic at hushm4il-please use the same discretion you do on the boards, thanks.
I don't claim to know the first thing about growing anything; hell, I can't make a Chia pet sprout.

lol gotta be organized

__________________
"Careful what you carry- 'cause the Man is wise- you are still an outlaw in their eyes" -Steely Dan
"Multiple pieces of anecdotal evidence do not equal scientific fact." -Rhizome
"If the Queen Bee ain't happy... the hive isn't happy!"-Dutch Pimp
http://boards.cannabis.com/basic-gro...e-harvest.html<-It's a grow guide! Enjoy!
http://boards.cannabis.com/plant-pro...hy-how-do.html <- all the boring stuff about soil chemistry you never wanted to know
http://boards.cannabis.com/grow-log/...ml#post1837597 <-how to make canna caramels
http://boards.cannabis.com/grow-log/...ml#post1820481 <-illustrated cloning guide permalink
Contacting Her Dankness: stinkyattic at hushm4il-please use the same discretion you do on the boards, thanks.
I don't claim to know the first thing about growing anything; hell, I can't make a Chia pet sprout.

had some spottage and yellowing myself my leafs looked about like yours. added some epsom salt and it cleared the problem up in a couple day the spots and yellow brown area will stay there but all the leaves looked healthy again and new grow did not get it. hope that will help.

yeah the striping in the 2ndpic is typical of mg def. there are multiple things goi g on here

__________________
"Careful what you carry- 'cause the Man is wise- you are still an outlaw in their eyes" -Steely Dan
"Multiple pieces of anecdotal evidence do not equal scientific fact." -Rhizome
"If the Queen Bee ain't happy... the hive isn't happy!"-Dutch Pimp
http://boards.cannabis.com/basic-gro...e-harvest.html<-It's a grow guide! Enjoy!
http://boards.cannabis.com/plant-pro...hy-how-do.html <- all the boring stuff about soil chemistry you never wanted to know
http://boards.cannabis.com/grow-log/...ml#post1837597 <-how to make canna caramels
http://boards.cannabis.com/grow-log/...ml#post1820481 <-illustrated cloning guide permalink
Contacting Her Dankness: stinkyattic at hushm4il-please use the same discretion you do on the boards, thanks.
I don't claim to know the first thing about growing anything; hell, I can't make a Chia pet sprout.

Thanks guys. Thats really confirming what was going round my head. I originally started a thread in plant problems, saying that i thought is was an nutrient def, in particular mg. Several people have suggested canna mg additive. Really appreciate the input, I'm still quite a novice. I've read all the books so I'm an expert on the theoretical but that goes out the window when it comes to the practical as I'm sure you would tell me. Ill keep checking the post and get some mg (epsom salt) additive banged in the tank asap and let you know how it goes.

P.S which country you from stinkyattic? if you don't mind me asking?

states. NEW england, specifically, lol!

__________________
"Careful what you carry- 'cause the Man is wise- you are still an outlaw in their eyes" -Steely Dan
"Multiple pieces of anecdotal evidence do not equal scientific fact." -Rhizome
"If the Queen Bee ain't happy... the hive isn't happy!"-Dutch Pimp
http://boards.cannabis.com/basic-gro...e-harvest.html<-It's a grow guide! Enjoy!
http://boards.cannabis.com/plant-pro...hy-how-do.html <- all the boring stuff about soil chemistry you never wanted to know
http://boards.cannabis.com/grow-log/...ml#post1837597 <-how to make canna caramels
http://boards.cannabis.com/grow-log/...ml#post1820481 <-illustrated cloning guide permalink
Contacting Her Dankness: stinkyattic at hushm4il-please use the same discretion you do on the boards, thanks.
I don't claim to know the first thing about growing anything; hell, I can't make a Chia pet sprout.

Cool. I only ask because i'm interested in peoples different ideas from different parts of the world. Just ordered some mg additive, I wait in a slightly stoned hopeful state of mind!