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what could this be?

help me :(

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Replies (23)
    • mag def

       

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      • do you think i can save them at this stage jim? 

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      • Totally agree with Jim but what is your ph doing? Are you having ph issues that is causing a nute lockout or are you not feeding enough cal mag?

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        • what ph do you suggest? 

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        • This looks like Something is going on with the PH, I’ve looked at my charts over an over for the deficiency an it looks like a few deficiency’s are goin on.

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          • PH could be your prob but I don't think so . It's one thing to diagnosis a deficiency, but you also want to know WHY !!! Sometimes K and Mg become unbalanced, especially during flowering, when P and K applications are heavier than Mg. Here's a great article on the subject. https://www.kpluss.com/en-us/our-business-products/agriculture/kali-academy/facts-worth-knowing/Interactions-of-potassium-and-magnesium/   

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            • I should have read this first, Great link btw

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              • It looks like some of those leaves are clawing a little, that's usually too much N isnt it? 

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                • Good article

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                • Defiantly a mag deficiency, why is what you need to figure out, PH issue, something else blocking the mag?  Sadly those leaves wont get better to tell you and there probably isnt a lot of new growth  going to pop out and tell you, but keep an eye out for it. 

                    Let us know what your feeding it, what order you mix the nutes in, and what is your PH

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                  • If that is soil then the PH is too low 

                    https://www.growweedeasy.com/ph

                     

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                    • To start I am not much of a soil grower, but I would flush it with plain water at 6.5 or a little higher and then start feeding again at 6.5 with cal/mag. In Flower I like to use botanicare cal/mag plus because it has less N.

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                      • I would also trim off all those yellow leaves, It looks like they have given all they can give and they wont get better

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                      • im using bio bizz light mix as substrate.

                        and ph is at 6.2 

                        should i start at 6.4?

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                        • you guys are so fucking helpfull i love you all

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                            • same problem?

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                              • There you go, I prefer that chart, it shows how the intake tapers off as the ph changes instead of the blunt ends make it look like the intake just stops.

                                Is that on a permanent spot on here? 

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                              • @CPW Yes the curling leaves do point to over doing ferts.

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                                • Thats what I thought, been a while since I have done that though. So I would guess a low PH is allowing al the N& K to be drawn in but also causing low P & Cal/Mag intake.  

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                                • Soil Growers, Please  double check what I am recommending and let RJ know, I am a primarily a hydro  grower

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