What's happening to my plant? Weird spots

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Primal420

Member
I have some rusty spots on my lower fan leaves and some are starting to become open holes? Other than that the leaves are in great shape. No curling or drooping. I've looked through several threads and I can't find a thing. Septoria, Nitrogen toxicity, or nute burn maybe? Idk.. Please help lol

Indoor FF Ocean Forest soil grow under LEDs with plenty of ventilation/fans. Watered with Fox Farm Grow Big and Big Bloom at 1/4 strength. Plants are 1 month old and all 3 have the same issue. I don't see any mites or anything either. Hard to see, but on the left of the leaf, the rust spot has opened into a small hole
 

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Primal420

Member
leather lungs said:
Are you spraying anything?
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I brewed a gallon of mild bat guano tea (npk of 7-3-1) (1 tablespoon per gallon) as a light foliar spray about 8 days ago. I sprayed them with less than a half quart, collectively, of it right before lights out. The rest went to my veggie garden outside. This problem started around 3 days ago after a feed with Fox Farm nutes. Maybe the guano and nutes were too much then, even though they were about 5 days apart? I should also mention this is my first grow
 
Killhunter

Killhunter

Member
Hmm yeah maybe your foliar spray is kinda strong. Personally I've had to dial my tea foliars back twice because they were too strong when I thought everything would be ok. Nowadays when I foliar I'll douse them with regular water after the tea is dried on the leaves as well to make sure they dont burn.
 
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Primal420

Member
Killhunter said:
Or do the leaves feel papery?
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I do have some purple stems. My leaves on one plant do feel papery as well, but it's always been that way for some reason. I'll get a pic of all the plants, although I trimmed the affected leaves thinking it may be fungal, as someone else had suggested. How soon after planting should I start adding cal-mag?
 
Killhunter

Killhunter

Member
Yeah, rust mold came to mind too. But honestly I hate ffof I've always had problems with it, have switched to happy frog. Seems npk balance is off with ffof especially when you start adding nutes. Problem with cal mag is, is it's not organic, and is a salt. So over time itll kill your microbiome in your soil. So what I do is this: every watering I add microbes(either azos or RAW microbes and mykos wp) as well as a ewc/humic acid/dirt/molasses/honey tea weekly. But every watering I add at least 150 ppm of general organics cal mag ph'd with earth juice's natural ph up and down. And I add cal mag after plant is 2 weeks old.
 
Killhunter

Killhunter

Member
I'm not a pro grower or anything, but just wanted to show you one of my grow rooms. This is 1 out of my 3 bloom rooms
 
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Beachwalker

Well-Known Member
Primal420 said:
I brewed a gallon of mild bat guano tea (npk of 7-3-1) (1 tablespoon per gallon) as a light foliar spray about 8 days ago. I sprayed them with less than a half quart, collectively, of it right before lights out. The rest went to my veggie garden outside. This problem started around 3 days ago after a feed with Fox Farm nutes. Maybe the guano and nutes were too much then, even though they were about 5 days apart? I should also mention this is my first grow
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Spray when lights come on, you don't want to put them to bed wet

Ps. Looks like calcium talk about pH
 
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