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HELP! leaves yellowing

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duckman

New member
looking for some second opinions...this just started happening a few days ago, seems to be spreading but slowly (I am happy to say!)...she's an auto, 7 weeks into flower so at least another 3-5 weeks to go, I'm thinking...growing in coco for first time, going light with the GH trio as per GWE schedule and have been adding CalMag as well...I have been giving plain pH'd water every other watering (or close to)...I'm thinking maybe copper deficiency? only seeing this in younger leaves near the top...I moved my LED up a few days ago but doesn't seem to be making a difference...pH going in around 6.0 and coming out the same...maybe lockout from salt retention? she still has a way to go so this is freaking me a bit...any thoughts welcome!
 

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Hello duckman you sure got a nice auto nice training looks healthy minus the little yellowing. Could be needs to dry out more before waterings&feedings? Do you have any white salt built up on the sides of your pot? White staining? I think your doing the right thing I mix my soils so I don't know too much about straight coco.

Hang in there someone will come along and help also.
 
You write you have the Ph levels in control.
so it’s probably not that. How much cal-mag do you apply when you water ?
as budgal is saying : it could be a lockout from salt build up. But I don’t know how common this is in a coco environment. You could flush the pots - give them a new range of nutrients- with the cal mag supplement including.
about the copper dificiens - what kind of water do you use. ? Tap or RO water ?
 
Hey... kids... 7 weeks into flowering. Couldn't the discoloration be the beginning of autumn? If the case, you're going to have all sorts of normal deficiency issues. If not, I'm a boob for saying anything. But I don't think I'm a boob.
 
Don’t be a boob! And I Don’t think you are at all.
It could be as you suggest- but if he is supplying with nutes, it shouldn’t do it, right. ? Then the plant is not eating it self befor it dies ?🤔. Or am I the boob here ?😅.
Any the sugar leaves so it as well?
 
The current nutes should be flowering nutes, not veg nutes. Lower N. The good parts of the plant are sucking up whatever is left in the fans. After a right good suck, the leaves turn color and fall off. In my experience, the sugar leaves will either stay green or turn purple. No dying or falling off.
You do too think I'm a boob. Everybody thinks I'm a boob. Absolutely everybody! I can see it in y'all's's eyes.
 
Shit you can really see in my last comment I’m high as shit 🤦🏼
Yea you’re right. My sugar leaves turn purple too.
But I never seen them yellowing like that in the pictures ? And I doesn’t look like a nute burn - in my opinion 🤔

Better being a boob than most other things - I guess🤣
 
It doesn't happen all the time. It could be genetics. Some say it's cooler temperatures in your dark 12.
At this point, there will be deficiencies and goodness. No burning.
 
So you’re diagnoses is normal with these plants in coco. ?
I just think it’s odd the sugar leaves tips in the pictures are burned? Or maybe I’m wrong here
 
That could maybe be a pH thing. In my opinion, it might be time to start flushing with nuteless pH'd molasses.
duckman It might be nice for us to include you in this aside. Your hairs look pretty well curled up. How do your trichomes look? I might have suggested your flowering time being off. I'm on my second autos. The flowering time was about two weeks longer than the seed people said. I've heard the same thing, about longer flower times, from other folks. You could maybe be farther along than you think. Maybe could.
 
I thought it might be a touch of overwatering as well, SoOrbudgal, but when I tried to go an extra day between waterings - usually 3.8 litres every other day in 3 gal fabric - it's so hot here 82* that the leaves started to curl up so I watered. and no, no stains on pot...all I can think of at this point is a salt buildup so maybe a flush...
 
regular tap water, usually adjust the pH down to 6.0 or so...I've been adding 2.5 ml CalMag (that's a half teaspoon for my U.S. friends ;) ) per gallon for the last few weeks...the copper should be there, this would be easier for me to figure if the pH was out of whack but looks like the pH I put in is the pH that comes out...
 
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yeah, I actually have been adding CalMag every watering but like I say my first grow in coco so I'm not sure what to expect...
 
I guess it's possible, @Gingerbeard...it just seems more like a deficiency than normal senescence...plus it's not the bigger fan leaves yellowing it's more the sugar leaves...I'm starting to think a flush and see what she looks like then but it's a bit weird...
 
Yes duckman. You're going to have nothing but deficiencies because everything is going to the flowers. The plants in the picture were fed with suppliments, rather than nutrients. Shame on me. You can see how I had all sorts of deficiencies. It was a lousy harvest full of airy buds, but still pretty. My last in those supplements.
One of my favorites
CaptainWiese91 you can zoom in and see sugar leaves with the same brown tips.
 

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seems they like to keep me guessing...just FYI Gingerbeard I checked the trichs, still clear, some of those brown pistils are brown because they got burned by Safer's Soap (won't be using that again, I think)...just need to hang in a few more weeks if she will permit :)
 
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