What the…??

AdkToken · May 24, 2023

I’m new to coco and I figured that I would try a coco hempy bucket and see what happens, but I’ve run into an issue that I can’t find out anything about. I’ve tried searching for info based on photos and haven’t seen anything that really matches…
This is happening on lower/older growth, but plant development hasn’t taken much of a hit. She’s still vigorous…

This is a Gorilla Glue auto by Barney’s
In 5 gal. Hempy
Coco Nation 70/30
I use distilled water since my well is a tad hard.
Using extra Cal-Mag and GH Flora Series Trio
Ph to 5.8-6.2
Water/feed once a day to 10% runoff
RH 50-65%
Last runoff was ph of 6.8
She’s 2.5 - 3 weeks old.

Thank you in advance for any info you may be able to provide. I’ve gone down a few rabbit holes and haven’t found an answer on my own.

Wastei · May 24, 2023

AdkToken said:
I’m new to coco and I figured that I would try a coco hempy bucket and see what happens, but I’ve run into an issue that I can’t find out anything about. I’ve tried searching for info based on photos and haven’t seen anything that really matches…
This is happening on lower/older growth, but plant development hasn’t taken much of a hit. She’s still vigorous…

This is a Gorilla Glue auto by Barney’s
In 5 gal. Hempy
Coco Nation 70/30
I use distilled water since my well is a tad hard.
Using extra Cal-Mag and GH Flora Series Trio
Ph to 5.8-6.2
Water/feed once a day to 10% runoff
RH 50-65%
Last runoff was ph of 6.8
She’s 2.5 - 3 weeks old.

Thank you in advance for any info you may be able to provide. I’ve gone down a few rabbit holes and haven’t found an answer on my own.

Didn't read all of your post. Could be pests, could be root related problems. I see slight clawing on the leaves.

Runoff EC is more important than pH since its going to tell you more how it may affect the pH of the medium until next watering. I've always adjusted my input pH to my runoff in coir. Runoff pH should optimally be 5.7-6.3 in any medium IMO.

420 Garden · May 24, 2023

What does the underside of the affected leaves look like?

MickFoster · May 24, 2023

Have you looked under the leaves with a magnifying glass?

420 Garden · May 24, 2023

And what are you catching on your yellow sticky

420 Garden · May 24, 2023

Mick I like the way we think

AdkToken · May 24, 2023

420 Garden said:
What does the underside of the affected leaves look like?

They look clean, but under the spots the leave is paper thin and kind of dry.

AdkToken · May 24, 2023

MickFoster said:
Have you looked under the leaves with a magnifying glass?

Edit: I took a hard look and didn’t see anything alarming. I’ll look closer with a loupe tomorrow.

AdkToken · May 24, 2023

Wastei said:
Didn't read all of your post. Could be pests, could be root related problems. I see slight clawing on the leaves.

Runoff EC is more important than pH since its going to tell you more how it may affect the pH of the medium until next watering. I've always adjusted my input pH to my runoff in coir. Runoff pH should optimally be 5.7-6.3 in any medium IMO.

I need to buy a ppm meter. It’s one thing I didn’t buy yet.

AdkToken · May 24, 2023

420 Garden said:
And what are you catching on your yellow sticky

I’ve caught a very few fungus gnats, but not sure if that’s from me overwatering, or me buying FF soil.
Either way,I guess it’s still me…
I have some other girls in soil as well, with no issues.

skinnys · May 24, 2023

Your ph is too high. When runoff is higher than input it's even higher than you think, your actual ph is probably 7-7.5. Confirmed by dark green leaves.
Either flush it or water with 5.5 until runoff is where you want it.
I don't know if this is the culprit though, I haven't seen those symptoms before. It's looking otherwise healthy, so I would check with a magnifying glass.

Jjgrow420 · May 24, 2023

AdkToken said:
I’m new to coco and I figured that I would try a coco hempy bucket and see what happens, but I’ve run into an issue that I can’t find out anything about. I’ve tried searching for info based on photos and haven’t seen anything that really matches…
This is happening on lower/older growth, but plant development hasn’t taken much of a hit. She’s still vigorous…

This is a Gorilla Glue auto by Barney’s
In 5 gal. Hempy
Coco Nation 70/30
I use distilled water since my well is a tad hard.
Using extra Cal-Mag and GH Flora Series Trio
Ph to 5.8-6.2
Water/feed once a day to 10% runoff
RH 50-65%
Last runoff was ph of 6.8
She’s 2.5 - 3 weeks old.

Thank you in advance for any info you may be able to provide. I’ve gone down a few rabbit holes and haven’t found an answer on my own.

What's you're ec from the tap? Higher than .5? Anything below .7 is generally acceptable. I think you're having an issue using distilled water and adding calmag.
What do you mean by 'extra calmag'. Even using ro water your ppm should be ~100 give or take after adding calmag which is far less than what the bottle says.
In one post, you say your water is hard. In another you say you don't have a TDS meter. How do you know how many ppms are in your tap water?
Is 'coco nation' pre buffered? Did you buffer it?

Phytoplankton · May 24, 2023

Almost looks like something was splashed on the affected leaves. If not, I’m thinking it’s a ph issue, although the new growth looks fine.

MickFoster · May 24, 2023

Closest thing I could find was Leaf Septoria.

AdkToken · May 24, 2023

Jjgrow420 said:
What's you're ec from the tap? Higher than .5? Anything below .7 is generally acceptable. I think you're having an issue using distilled water and adding calmag.
What do you mean by 'extra calmag'. Even using ro water your ppm should be ~100 give or take after adding calmag which is far less than what the bottle says.
In one post, you say your water is hard. In another you say you don't have a TDS meter. How do you know how many ppms are in your tap water?
Is 'coco nation' pre buffered? Did you buffer it?

I have a simple TDS meter but I’m new to this and not well versed and am not sure. I ordered an ec meter today for the simplicity. My tap has a TDS of 79-80, with a ph of about 9.1-9.2. (I might also be an idiot, but I’m trying to learn)
As far as calmag, I’m learning as I go… I may have been adding too much. I was under the assumption that extra calmag was needed when using coco.
The FF Coco Nation 70/30 is buffered…

AdkToken · May 24, 2023

MickFoster said:
Closest thing I could find was Leaf Septoria.
View attachment 5293701

I jumped down that rabbit hole too and it didn’t seem like the culprit.

AdkToken · May 24, 2023

Phytoplankton said:
Almost looks like something was splashed on the affected leaves. If not, I’m thinking it’s a ph issue, although the new growth looks fine.

I’m starting to lean towards a ph issue as well, since my runoff is a ph of almost 7.

pegboy · May 24, 2023

MickFoster said:
Closest thing I could find was Leaf Septoria.
View attachment 5293701

Yep. I'd bet my paycheck on that.

AdkToken · May 24, 2023

skinnys said:
Your ph is too high. When runoff is higher than input it's even higher than you think, your actual ph is probably 7-7.5. Confirmed by dark green leaves.
Either flush it or water with 5.5 until runoff is where you want it.
I don't know if this is the culprit though, I haven't seen those symptoms before. It's looking otherwise healthy, so I would check with a magnifying glass.

Great point. This makes sense. I’ll try a flush…

Jjgrow420 · May 24, 2023

AdkToken said:
I have a simple TDS meter but I’m new to this and not well versed and am not sure. I ordered an ec meter today for the simplicity. My tap has a TDS of 79-80, with a ph of about 9.1-9.2. (I might also be an idiot, but I’m trying to learn)
As far as calmag, I’m learning as I go… I may have been adding too much. I was under the assumption that extra calmag was needed when using coco.
The FF Coco Nation 70/30 is buffered…

It's not really true
It depends on your nutrients. I run no calmag and never had an issue. If your tap ppm is 80 you have GOOD water no need for any silly distilled nonsense

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