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Spots on the leaves

spacetimeman
spacetimemanstarted grow question 2y ago
There are brown spots on the some leaves of the one of two similar plants. What to do with this?
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Week 4
Leaves. Other
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greenAF
greenAFanswered grow question 2y ago
I don't know the nutes your using and I don't see you keeping track of EC, but it looks like mag def, if u have calmag hit it with that or adjust main nutes. I don't see any Nute burn so u may be able to get away with upping the levels across the board, but your probably better off just hitting it with some calmag.
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Roberts
Robertsanswered grow question 2y ago
It is a phosphorus deficiency. Your starting to flower, and you are not giving it much for supplements. Flowering npk ratio is 1-2-3
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AutoflowersSucK
AutoflowersSucKanswered grow question 2y ago
Looks like Calcium deficiency. If you dont use a calcium supplement you should. Especially if youre using coco coir. A alternating feed/calmag/feed/calmag is a good regiment. and calcium has been shown that it is most available to cannabis plants at a pH of 6,2 Adjust your pH to 6.2 and add some extra calmag to your next watering at 1.5ml per liter
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DoughHead
DoughHeadanswered grow question 2y ago
No tips burnt so I would guess nute burn. I would guess as others said calmag, specifically Calcium. Also over watering can cause brown spots. Let your pot dry back 40-50% before next watering and then continue feeding regiment. I would add 2ml per gallon of calmag to your line if you don't already have it. Goodluck. Please consider selecting me as the answer so I can be entered for a chance to win grower of the month contest I would really appreciate your support growmie 🙏 😃
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Sciolistic_Steve
Sciolistic_Steveanswered grow question 2y ago
calcium deficiency, maybe.. do you allow at least 50% dryback? these dead spots look like they could be irrigation habit related. if not allowing top 1" to dry before next irrigation, do that for a couple weeks and see how that plant responds.
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