Rusting leafs?

stawawager

stawawager

Well-Known Member
Please help diagnose my problem foliage, thanks:

Symptoms: droopy leafs – spots – tops yellowing / yellower on top.

Well water with iron not running through whole house filter.

Lowering pH to 6.0 - 6.1 with 25 drops of hydrochloric acid / gallon.

Using 3 (correction: 7) year old nutes ¼ tsp / gallon.

Been adding ¼ tsp cal mag +iron last two waterings.

Water almost daily when moisture probe reads dry with 1 quart / girl.

6/18 light schedule.
20241108_083019.jpg20241108_083029.jpg20241108_083036.jpg20241108_083053.jpg20241103_214048.jpg
 
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stawawager

stawawager

Well-Known Member
HydoDan said:
What is the NPK of your nutes? Too me they look overwatered and hungry..
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9 3 6
Screenshot_20241108_130200_Amazon Shopping.jpg

I was wrong, it's 7 years old.Screenshot_20241108_130727_Amazon Shopping.jpg I Google npk for cannabis - result 3 1 2. Is 3 1 2 just a ratio of 9 3 6 and you use more product to bring it up to 9 3 6?
 
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HydoDan

HydoDan

Well-Known Member
stawawager said:
I was wrong, it's 7 years old.
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I recommend increasing the nutrients to 1 teaspoon per gallon as the manufacturer suggests. Water until there's a small amount of runoff, then wait until the pots feel light before watering again. Typically, I water every three days. Watering a quart every day is excessive; overwatering is often due to frequency, not the amount.
 
stawawager

stawawager

Well-Known Member
HydoDan said:
I recommend increasing the nutrients to 1 teaspoon per gallon as the manufacturer suggests. Water until there's a small amount of runoff, then wait until the pots feel light before watering again. Typically, I water every three days. Watering a quart every day is excessive; overwatering is often due to frequency, not the amount.
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I'm growing in soil, I think it 1/4 tsp per gallon. Maybe you're thinking of hydro? I included the back of the jug's instructions.

My nutes are 7 years old, I'm guessing I need new stuff. What do you recommend for npk?
 
HydoDan

HydoDan

Well-Known Member
I'm looking at the production dose and you're looking at the maintenance dose..
Do you have a ppm/ec meter? If not you should get one.. That way you know exactly how much you're feeding.. How heavy are your pots? Do they ever get a good dry back? If they're always wet the roots can't take up oxygen.. And..
Fertilizer will not go bad as long as it’s stored properly1. Synthetic liquid fertilizer rarely goes bad before you use it all, but liquid fertilizers that use organic ingredients do go bad as no stabilizing chemicals are used to keep it from degrading2. Fertilizers can lose their nutrient and chemical properties when exposed to high humidity3.
 
stawawager

stawawager

Well-Known Member
Greengrouch said:
It looks likes he’s using dynagro and potting mix though.

Might not be enough drainage in those buckets, maybe elevate them a bit and drill a couple more holes in the bottom
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I know that overwatering will give droopy leaves but will it also make them yellowish?
 
stawawager

stawawager

Well-Known Member
HydoDan said:
I'm looking at the production dose and you're looking at the maintenance dose..
Do you have a ppm/ec meter? If not you should get one.. That way you know exactly how much you're feeding.. How heavy are your pots? Do they ever get a good dry back? If they're always wet the roots can't take up oxygen.. And..
Fertilizer will not go bad as long as it’s stored properly1. Synthetic liquid fertilizer rarely goes bad before you use it all, but liquid fertilizers that use organic ingredients do go bad as no stabilizing chemicals are used to keep it from degrading2. Fertilizers can lose their nutrient and chemical properties when exposed to high humidity3.
Click to expand...
They do dry out usually and get lightweight.

I do have a PPM meter/ec. I'll educate myself on it.

I'm guessing this liquid Dyna grow is synthetic,
Screenshot_20241108_130200_Amazon Shopping.jpg else it would say organic.
 
stawawager

stawawager

Well-Known Member
Hollatchaboy said:
If he's in organic soil, adding feed every watering i believe is a no no.
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I heard on the Strain Show that the organic soil is good for 30 days with no nutrients, than you have to start adding them.

These are 50 days into the grow but I've added nutes for a good part of that. I added a couple days of cal mag +iron and that made the rusting worse I'm pretty sure.
 
HydoDan

HydoDan

Well-Known Member
You may have introduced nutes too soon/often.... Do a soil slurry test, check ec and ph..
You may have to do a flush and reset things..
 
stawawager

stawawager

Well-Known Member
HydoDan said:
You may have introduced nutes too soon/often.... Do a soil slurry test, check ec and ph..
You may have to do a flush and reset things..
Click to expand...
Yeah, going to go for the reset for a week or more.

I'm at 50 days. How long would you go before flowering?
 
420AD

420AD

Well-Known Member
might be a phosphorus deficit and I would turn down the lights a little, might help 'em recover.
how's your temperature look like?
 
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