What's happening to my plant? Weird spots

[Primal420]

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

 

[Killhunter]

Is it your bottom leaves only?

 

[leather lungs]

Are you spraying anything?

 

[Primal420]

Is it your bottom leaves only?

So far, yes. Seems to be getting worse. 3 different strains (2 autos and one photo) and they all have it. The photo seems to be getting better though.

 

[Primal420]

Are you spraying anything?

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

 

[Primal420]

Is it your bottom leaves only?

Are you spraying anything?

I've fed them twice with the same 1/4 ration of FF twice before with no issues. Usually once a week. Other than that, and the single use of foliar spray, I only use ph'd water.

 

[leather lungs]

I saw some circular deposits on leaves. Might be the start of calcium diff.

 

[Killhunter]

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.

 

[Killhunter]

But yeah like leather said too, it could be a calcium def starting too maybe. You got some purple stems or?

 

[Killhunter]

Or do the leaves feel papery?

 

[Killhunter]

Also a pic of the whole plant would be nice too, not gonna lie lol

 

[Primal420]

Or do the leaves feel papery?

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]

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]

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

 

[Killhunter]

But anyway, leaves will start yellowing as well if it's a calcium def. So keep an eye out for that

 

[leather lungs]

Also a pic of the whole plant would be nice too, not gonna lie lol

^^^^^^

 

[420dian]

Does it look like this??
Any one know what that is??

 

[Beachwalker]

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

Spray when lights come on, you don't want to put them to bed wet

Ps. Looks like calcium talk about pH

 

[Killhunter]

Did you check the run off for ph imbalance?