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Grow QuestionsHello friends, do you know what kind of issue coul...

Hello friends, do you know what kind of issue coul...

JohnyVstarted grow question a year ago

Hello friends, do you know what kind of issue could be these brown spots. It appeared one day ago. I grow in coco perlit with canna feed according feeding chart. Thank you for your advices..

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Leaves. Color - Yellow

Leaves. Color - Dark-brown

Mr_Incognitoanswered grow question a year ago

Hi bro! Welcome to the “CalMag deficiency community”! When you grow in coco, the only thing to do is to always use special nutes for coco, or apply additional CalMag as recommended by manufacturer for coco substrate. It naturally locks some part of available Ca, Mg, Fe and releases Na and K. If the substrate was not properly buffered with CalMag, you need to feed more CalMag, basically raising EC until substrate gets saturated enough and most cations of Na and K are released. If you want to flush coco in veg or flowering before the flushing week (which is probably a myth), never apply just RO or tap water. It must be CalMag water. Lockout will take place until all coco tissues break down by roots and microorganisms, that means never. But it will surely be less in time. Your plant looks great, there’s not a big issue. You may try CalMag spray with pH 6.0 1/2-1/4 strength of recommended for watering. Effects of foliar spray are fast, spray from underneath. The damaged patches will not recover, pay attention to new growth. If it’s rapid, you’re good 👍

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Dabkinganswered grow question a year ago

Give your plants some Nitrogen

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Robertsanswered grow question a year ago

If in coco it is likely ph related. 5.8 in 5.8 out. Coco always stays wet so stronger feed is tolerated. Cal mag is needed.

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AutoflowersSucKanswered grow question a year ago

Nutrients are a bit too hot. Flush with clean pH balanced water. Let soil dry, then resume feeding. Might just be a bit of salt build up in the medium thats creating it. I just had the same issue only much worse. I flushed the plant with just water and it stopped the problem dead in it's tracks. Perhaps raise your light a bit of dim it a little as well because i see your leaf tips are yellowing which is a sign of light stress.

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Sciolistic_Steveanswered grow question a year ago

Maybe hint of Ca deficiency... other things can cause this but your plants don't look overfed, and double check pH is in proper range. If this has slowly progressed, assess how much Ca you typically feed and increase it in future.. A small adjustment of 5-10ppm can be enough for a problem that took a very long time to present itself - i.e. not far off to start but eventually deficient over long-haul. coco you feed every irrigation at an "on demand" concentration. It should be complete and well-balanced for everthign the plant needs. slowly fine-tune your formul until you get consistent symptom-free growth even 2-3 months in. Throw the feeding chart out... looks like it got you in a good ballpark, so it did its job, but in the end your environement will cause deviation from what others need to do. Take notes. adjust. it'll never be perfect, but if all you ever need to make is small 5-10ppm tweaks of various nutes here or there, it avoids 99.9% of any nute-related issues.

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