Rust colored spots on leafs.

[rr14]

I'm getting some rust colored leafs on the plant toward the top. There is also some curling leaves. The plant is in flower and is getting a 3/2/1 ratio of gh nutes. I'm also tossing in a little kool bloom too. Nutes are about 900 ppm. It has been in flower for abour 3 weeks.

 

[Guest]

rust can mean different things to different people
no pics? id venture to guess its radiant heat damage. . .

 

[aeric]

I have a spot problem (will post thread later) and here are some possibilities: mel frank: potassium deficiency, my name stitch: calcium deficiency, others: pH spotting, Jorge Cervantes: leaf spot fungus. Sorry I can't be of more help, I'm stumped. A pic or scan or more detail would help, it may not be what anyone assumes it to be.

 

[rr14]

 

[Guest]

yikes, well im a soil guy, but looks like a combination of things, however the pics show no heat spots/damage
unless of course you sprayed them with insecticide/neem-i do get similiar blotching from (bon)neem sometimes
even with the lights off.
if you didnt spray anything, its a nutrient problem (unless you have a dead room/stale air)

so, lets break it down,

-what is the pH
-are you/have you foliar sprayed anything
-do you have proper HVAC & a fan rustling them 24/7?
-are those pics all the same plant??

thanks, the more information you give the better the replies will be.
maybe a hydro person will swing through and know the problem(s) immediately.

be well

 

[Guest]

looking a bit closer at the pics, i see primary nutrient deficiency(s), maybe even too much of 1 thing and not enough of another?
but, again, without more info or someone who has gone through the same exact turmoil seeing this,
its difficult to say why its happening.
what kind of system is it? the plant is simply not taking up essential nutrients,
and there is a reason, i just wish i could be of more help sorry man,


BUMP!

 

[aeric]

Good thing u posted those pics...that's a different ballgame from what I was thinking. Definately a combo of problems as capitano said...just a guess also that maybe you used the Koolbloom a lil early and a lil heavy. IMHO whatever it is, however you take care of it, start giving them something more akin to a Lucas formula rather than 3-2-1 which I'm hoping was a typo and you meant 1-2-3 G-M-B. If you actually are giving them 3-2-1 there's your problemo.

 

[Dirty]

wow guy, that looks alot like the same thing my plants were going through, it's hitting my fan leaves first then the rest the plant.






it's not a pretty thing.

But Ii've been growing in soil, i know you didnt specify you're grow, using GH nutes i'd assume you're using a hydro setup.

But what everyone has said it boils down to either, damage from neem oil (i've had spidermites) being left on the plant, ph inbalance, or overfert.

If you havent had any spidermite problems and havent sprayed any neem oil for anything then it probably means it's one of the latter two.

i'm really interested to know, because as of yet i'm still not sure what exactly the problem is, today my girls are on day 25 12/12

 

[Alex-F]

I have something simular. Mine is probably calcium deff resulting from nute lockout as people have said

 

[Dirty]

RR14...

RR14...

Did you ever get to confirm what the problem was???

I'm also seeing some spots on even my vegging clones now.

 

[sproutco]

check the ph and make sure it is not too low

 

[rr14]

it was nute lock out from ph imbalance. the ppm skyrocketed then to over 2500 ppm within days.