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2/3 plants show weird leafs. All are fed from the same water. 2 different issues. Anybody know what this is?

Ibanhead
Ibanheadstarted grow question 2 years ago
Back plant has discolored leafs, lighter appearance and darkbrown spots on the leafs. The front left plant has dead/yellow/dried spots in the middle of healthy looking leafs. Any ideas what this is? I can add more pictures if needed.
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Week 13
Leaves. Color - Yellow
Leaves. Color - Dark-brown
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Cloyy
Cloyyanswered grow question 2 years ago
Looks like a magnesium deficiency, coupled with some leaf contact issues and maybe a PH issue, since the nitro they need is a mobile nutrient. Nothing crazy, easy fixes!
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Foffukuntz
Foffukuntzanswered grow question 2 years ago
First 2 pictures static leaf contact and moisture build up between them. A lot is humidity VPD problem caused by much plant small area and environmental issues day/night. You need dehumidifier exhausting near the air intake not AC! In tent would be no use as extraction will usually clear the tent of air before AC/dehumidifier can have an effect. Dri eaz cube was my solution,but not cheap, you can tool hire one even 😄 I bought one second hand from a pawn shop, no more RH probs, not cheap to run at 1.5kw max but better than tossing bud. Had bud rot, gutting, unsmokeable too.
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NobodysBuds
NobodysBudsanswered grow question 2 years ago
the twisting of leaves denotes some ph swings. this happens due to varying rates of gowth over time caused by ph swinging too much. looks like coinciding symptoms of potentially different causes... could be pH or improper ratio of nute concentrations causing some lockout too. need more info for a solid answer... i see you have been feeding terrabloom the last three weeks and before ethat had a little tip burn on leaves. that could be more than 1 cause too... anyway, go check out manic botanix nutrient calculater and see what your terrabloom is providing in a more resolved way... more likely to recognize if something si too high o too low than just guessing about it or learning slowly from trial and error. it's been a bit imbalanced the whole time, so it's difficult to know for certain what the cause is. something was stated that is not correct: "Plants are eating all the potassium and phosphorus making your ph rise, " -- does not work this way.... the plant in no way actively selects what it takes in... if it fits through the permeable membrane of roots, it will be taken in. Whatever is in solution that fits through, will be "drunk". how ph can be impacted baed on facts: if not fully chelated or fixated nutes, what gets left behind could cause a fluctuation (one more reason to avoid 'organic'). this is from feeding too much or a rhisopshere that cannot properly process the given molecules into plant useable 'food' fast enough... or need lower concentration in feeding regimen.. depends. microbes can cause pH to rise by absorbing things, causing chemical changes and evacuating byproducts that are now acidic. not much you can do about this... beneficial microbes often keep this in check through competition for resources. h2o2 drench and re-inoculate but probably going to set oyu back.. and if in flower, may be better not to bother. evaporation will cause pH to rise because pH is calculated from ratio of proton donators or acceptors in a specific volume of water... reduce the volue of water and you increase the molarity (i.e. higher concentrationsn or h3o+ or oh- floating around in a smaller volume) what we add can change pH... nothing else magically changes pH without real cause and effect. the plant has no central nervous system. it doesn't think. it doens't make decisions. it is not a picky eater in any sense. it merely reacts to environment in a very compartmentalized way based on exposure. while what was said is could be right, if the cause and effect is explained poorly, it'll inevitably lead to bad assumptions in future.
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Chow_13
Chow_13answered grow question 2 years ago
First 2 pictures - unknown Third Picture im gonna guess nitrogen deficiency ( or in a highly unlikely chance Mosaic virus ) Last 3 pictures are a magnesium deficiency/lockout. <- From either PH out of range, To much food causing lockout or an actual deficiency.
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Roberts
Robertsanswered grow question 2 years ago
You have ph issues in substrate showing 3 different deficiencies. Plants are eating all the potassium and phosphorus making your ph rise, or your are not getting aquate run off when you feed and you have salt build up causing ph to spike down. You likely know which it is.
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