Strange issue I’ve never encountered before..

  • Thread starter Ihavenoideawhatimdoing
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Ihavenoideawhatimdoing

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Hello all, been growing for 30 years, and have never seen this issue. Maybe I live in a hole and others are familiar and if so, please educate me.

In week 2 of flower, and the Maine fan leaves are exhibiting this issue. They start yellowing but almost turn to have oil spots on them, then they proceed to die.

The tent is free of pests, fed balanced natural spring water at 6.4. Soil is Lush. Airpot. Watered when needed. Fed light bloom once a week.

Temp stable 75 lights on 68 lights off.
12/12 ac tent and light.

I don’t think this is an issue being overfed, but something def isn’t right, I’m guessing possible phos deficiency. As I said I’ve been doin this a long time, but always have more to learn, I’ve just never personally encountered this.

This is a sequential plant off a new batch of seeds, and am not concerned for yield, trimming, or anything. Just simply seeing a 2 main shoot stretch.
 
Strange issue ive never encountered before
Strange issue ive never encountered before 2
Strange issue ive never encountered before 3
Strange issue ive never encountered before 4
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mysticepipedon

mysticepipedon

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I lean towards phosphorus, too -- mainly because it can look different on different plants and it's not N, K or Mg.

The usual culprit in lockout is calcium, but there are often other things locked out at the same time and I'm not seeing those. Could be you need some flower nutes. Lush is great stuff, but it can only supply nutrients for 5 or 6 weeks.
 
Homesteader

Homesteader

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I would have guessed it is locked out caused by the cold but you said it is fairly stable. Is the floor cold by any chance?
 
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Ihavenoideawhatimdoing

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The floor could be a bit cooler yes, I can put it up a bit.

Yes overwatering not an issue, and the air pots really dry out way quicker.

Lush does compact way easier so maybe it’s too dense?

It’s a very rapid issue, new leaves every day, but it’s only on fans and not on new growth. Moving bottom up.
 
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