Which deficiency is this? White widow

This is week 5 for my plants. I’m growing two GDP and two WW. The white widows went into flower in week 3-1/2, which is surprising early but I guess you can’t do much with autoflowers. One white widows is the only one showing some problems with the leaves, does this look like a calcium deficiency?
Thanks for the help!


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That’s different. Does this chart help?

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Perhaps…

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Or maybe…

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Looks a bit like a cal deficiency to me. The potassium doesnt really stand out. Plus that tends to happen later in flower eh?

Have u supplemented any calmag so far? How old are the plants? (5 weeks, my bad missd that part) And what kind of medium are you using?

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I’d hit them with some Calcium Magnesium. Cannabis is know to really need this additive.
Looks like it’s a Mobile, bottom up, deficiency.

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Have you been having trouble with pH swings?

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I’m thinking it’s a cal mag problem. They’re growing in happyfrog, temp 75-80, humidy around 45-50. They’re around week 5 right now. I’ve been feeding once a week and watering twice. I feed them bergmans food according to schedule, switching to the flower one now. I’ll try done calmag and see if that works. Thank you guys!!!

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