Yet another leaf problem ID

[Gurtgurt]

I can't tell what these leaf problems are, I've looked on several guides and it looks like it could be any of 5 things to me.

Here is 1 week ago:

I guessed at salt buildup so between those pictures and now I "flushed" with 90% nutrients to whatever runoff I could deal with, maybe 20% of input volume. They acted slumpy and over watered for a few days.

Here is today:

In the group photo, all the top growth looks like a lighter shade of green to me but might not show in the photo.

Here is what I suspect: I am following exactly the thread "Ballin on a budget" in the nutrients forum here. It is regular Jacks 321 + silica + fulvic. But I think these nutrients are meant for RO water and I am using tap water through a charcoal filter. I suspect it is getting too much of some chemical from the tap water plus additional Jacks.

In fact I see now that Jack's website has a fertilizer for cannabis specifically for tap water--which maybe I should have bought but didn't.

Relevant details:
In soil 3 gal pots indoors.
Under 300W LED, 60% power, light 16 inches away (I raised the light today)
75 def F and 55% humidity during the day, unknown at night (but cooler)
The latest pictures are about week 10 of veg. I'm ready to flip now.
Feed at 6.5-6.8 pH every time.
No way to tell EC or PPM of water, but I do have a municipal quality report.
The images are of bottom leaves -- but lately the tops look light and leathery to me.
Strain is Cherry Pie.

Come to think of it, this last week the leaves have looked curled, not pancake flat toward the light. Maybe raising the light will help.


What say you?

I'm a little disappointed because this fertilizer has given me bigger leaves and stronger stems than I'm used to, despite whatever imbalance and less than ideal environment.

 

[Gurtgurt]

Using Part A at 3 g
Part B at 2 g
Epsom salt at 1 g per gallon.

Here is a page from my city's latest water quality report:

 

[JIMKSI64]

What exactly do you mean by " soil "
Need this information for any input and your watering procedure. How do you determine the pot is ready and how much do you put in.
Jack's is also dependant on what goes in the water first and last.
If you have an EC pen check your ppm of the tap water. If it's over 400 or so they do recommend RO or the dirty water formula for jacks.

 

[MercDod]

Im dont know much about water reports but is that clorine in your water? If yes, do you let it sit for 24 hours before using it? Not sure thats your issue but was just wondering?

 

[Grownsince95]

Your water is on the hard side and that makes the balance of K, Ca and Mg very important. You're going to need an EC pen to measure what you're feeding.

I would start by lowering all your inputs .5 g until you can measure the strength of your feed. You need to eliminate blind spots like not knowing the temp and humidity at night and EC of your water so you can make more informed decisions.

It's obvious you are dealing with an antagonism and not a deficiency. Too much of any one of Ca, Mg or K will cause problems with uptake of the others. Your silica is adding K, Jacks adds K, Ca, and Mg and your tap water is adding additional Ca and Mg. It's going to be up to you now to figure out what's throwing off the ratio.

A good ratio to target would be 2/4/1 K/Ca/Mg.

 

[NairnM16]

Going out on a long shot here but this looks like a manganese deficiency

I could be wrong, but the interveinal yellowing progressing into necrosis

Very similar to calmag deficiency but the yellowing starts with the young growth not the old growth, I could be wrong I was just looking at the photots

 

[Grownsince95]

I can't tell what these leaf problems are, I've looked on several guides and it looks like it could be any of 5 things to me.

Here is 1 week ago:
View attachment 2618598
View attachment 2618599
View attachment 2618600
View attachment 2618601

I guessed at salt buildup so between those pictures and now I "flushed" with 90% nutrients to whatever runoff I could deal with, maybe 20% of input volume. They acted slumpy and over watered for a few days.

Here is today:
View attachment 2618602
View attachment 2618603
View attachment 2618604

In the group photo, all the top growth looks like a lighter shade of green to me but might not show in the photo.

Here is what I suspect: I am following exactly the thread "Ballin on a budget" in the nutrients forum here. It is regular Jacks 321 + silica + fulvic. But I think these nutrients are meant for RO water and I am using tap water through a charcoal filter. I suspect it is getting too much of some chemical from the tap water plus additional Jacks.

In fact I see now that Jack's website has a fertilizer for cannabis specifically for tap water--which maybe I should have bought but didn't.

Relevant details:
In soil 3 gal pots indoors.
Under 300W LED, 60% power, light 16 inches away (I raised the light today)
75 def F and 55% humidity during the day, unknown at night (but cooler)
The latest pictures are about week 10 of veg. I'm ready to flip now.
Feed at 6.5-6.8 pH every time.
No way to tell EC or PPM of water, but I do have a municipal quality report.
The images are of bottom leaves -- but lately the tops look light and leathery to me.
Strain is Cherry Pie.

Come to think of it, this last week the leaves have looked curled, not pancake flat toward the light. Maybe raising the light will help.


What say you?

I'm a little disappointed because this fertilizer has given me bigger leaves and stronger stems than I'm used to, despite whatever imbalance and less than ideal environment.

What kind of silica product are you using? I'm going to circle back and think you should also be looking at pH as your culprit here.

 

[JIMKSI64]

What kind of silica product are you using? I'm going to circle back and think you should also be looking at pH as your culprit here.

Almost 8 out of the tap.

 

[Grownsince95]

Going out on a long shot here but this looks like a manganese deficiency

I could be wrong, but the interveinal yellowing progressing into necrosis

Very similar to calmag deficiency but the yellowing starts with the young growth not the old growth, I could be wrong I was just looking at the photots

There's no such thing as "calmag" deficiency and Ca issues do start on the new growth, not old. So yes, you are wrong on that one

Almost 8 out of the tap.

That's totally normal, mine goes from 7.4 to 7.6. Municipalities raise it to avoid corroding lead pipes.

This is what happens to my tap water when you add armor si at 1 tsp per gal.

Tap

With silica

 

[Ninjadogma]

There's no such thing as "calmag" deficiency and Ca issues do start on the new growth, not old. So yes, you are wrong on that one

That's totally normal, mine goes from 7.4 to 7.6. Municipalities raise it to avoid corroding lead pipes.

This is what happens to my tap water when you add armor si at 1 tsp per gal.

Tap
View attachment 2618877

With silica
View attachment 2618878
View attachment 2618876

pH drops for the win! You never have to calibrate and they won't ever lie to you.

 

[Grownsince95]

pH drops for the win! You never have to calibrate and they won't ever lie to you.

Also cheap and lasts a while

 

[Week4Bytch]

I can't tell what these leaf problems are, I've looked on several guides and it looks like it could be any of 5 things to me.

Here is 1 week ago:
View attachment 2618598
View attachment 2618599
View attachment 2618600
View attachment 2618601

I guessed at salt buildup so between those pictures and now I "flushed" with 90% nutrients to whatever runoff I could deal with, maybe 20% of input volume. They acted slumpy and over watered for a few days.

Here is today:
View attachment 2618602
View attachment 2618603
View attachment 2618604

In the group photo, all the top growth looks like a lighter shade of green to me but might not show in the photo.

Here is what I suspect: I am following exactly the thread "Ballin on a budget" in the nutrients forum here. It is regular Jacks 321 + silica + fulvic. But I think these nutrients are meant for RO water and I am using tap water through a charcoal filter. I suspect it is getting too much of some chemical from the tap water plus additional Jacks.

In fact I see now that Jack's website has a fertilizer for cannabis specifically for tap water--which maybe I should have bought but didn't.

Relevant details:
In soil 3 gal pots indoors.
Under 300W LED, 60% power, light 16 inches away (I raised the light today)
75 def F and 55% humidity during the day, unknown at night (but cooler)
The latest pictures are about week 10 of veg. I'm ready to flip now.
Feed at 6.5-6.8 pH every time.
No way to tell EC or PPM of water, but I do have a municipal quality report.
The images are of bottom leaves -- but lately the tops look light and leathery to me.
Strain is Cherry Pie.

Come to think of it, this last week the leaves have looked curled, not pancake flat toward the light. Maybe raising the light will help.


What say you?

I'm a little disappointed because this fertilizer has given me bigger leaves and stronger stems than I'm used to, despite whatever imbalance and less than ideal environment.

No way of knowing soil and water parameters is really tough. Are you even watering to runoff? (15-20%) With everything laid out it points to the classic lock out. You NEED to know the EC & pH of your water before using, and the pH of your soil/medium. They are not ready for the flip at all. And the pH and EC of your tap water does matter (for this grow) your accumulating or taking away from the mix. What part of the EC is from the tap water and what part of it is it from the salt based nutrients? These recommendations from manufactures are based off mixing with RO water. (RO is near zero EC) Whats your tap waters EC? Get the EC pen ASAP. Not expensive and responsible growers have more than one around. MAn up.

 

[Gurtgurt]

So this guy at work asked me how to do something, I needled him about his lack of preparedness and slapped his head as he walked away, the nerve!

To answer some questions posted:
These are in new FF Happy Frøg that is old enough to be rid of the built-in nutes.
I water when leaves start to droop and the pots feel light--though not AS LIGHT as I used to, still a little water weight at the bottom.
I hand-water very slowly in short bursts, it is an all day affair, to runoff**
I have not checked soil pH ever; but the input water has always been 6.5-6.8 (the water comes out to about 6.8-7 pH with nutes and no pH up/down!)
The silica product I use is this one:

I'm pretty sure I'm mixing the products in the right order.
Each plant is in a 3 gal fabric pot and receives ROUGHLY 5/6 of a gallon of feed water, on a continuous feed as per Jack's instructions.
I manually start a heater in the tent to get it to a growing range during the day, but I can only minimally effect the basement environment.
The tap water passes through a "boogie brew" KDF filter before I use it, and because of that I don't let the water sit out.


**Upon estimating the amount of runoff, maybe it is not enough. The plants drain into trays that I have to suck up with a straw when full.

I can't afford an EC meter because I'm destitute and already spent all my pennies on other inputs.

I will start dialing back the added nutrients for now. I'm gonna cry now yall

 

[Grownsince95]

So this guy at work asked me how to do something, I needled him about his lack of preparedness and slapped his head as he walked away, the nerve!

To answer some questions posted:
These are in new FF Happy Frøg that is old enough to be rid of the built-in nutes.
I water when leaves start to droop and the pots feel light--though not AS LIGHT as I used to, still a little water weight at the bottom.
I hand-water very slowly in short bursts, it is an all day affair, to runoff**
I have not checked soil pH ever; but the input water has always been 6.5-6.8 (the water comes out to about 6.8-7 pH with nutes and no pH up/down!)
The silica product I use is this one:
View attachment 2619019
I'm pretty sure I'm mixing the products in the right order.
Each plant is in a 3 gal fabric pot and receives ROUGHLY 5/6 of a gallon of feed water, on a continuous feed as per Jack's instructions.
I manually start a heater in the tent to get it to a growing range during the day, but I can only minimally effect the basement environment.
The tap water passes through a "boogie brew" KDF filter before I use it, and because of that I don't let the water sit out.


**Upon estimating the amount of runoff, maybe it is not enough. The plants drain into trays that I have to suck up with a straw when full.

I can't afford an EC meter because I'm destitute and already spent all my pennies on other inputs.

I will start dialing back the added nutrients for now. I'm gonna cry now yall

Don't cry, you're using the "good" silica! And it's only a few low, older fan leaves. I would just ease up the food a little and see how they respond.

Cold at night isn't helping either. Run the heater if you have to. If the soil is 6O° or less everything in the root zone slows to a crawl and eventually stops.