What this heck is this?

priestriver · Mar 21, 2025

BLUE DREAM. Seemed to be doing great. I thought this was old probs from a few weeks ago but now I wonder if somethings going south on me.
11 weeks. FF Ocean Forest. From seed.

Thank you!!

Jimski · Mar 21, 2025

Without knowing nutes and schedule it looks like cal mag def. OF would have been long drained by now at week 11.
Wait is that a 5 gallon bucket? does it have drain holes? Bottom of plant looks rough. It looks like a few things going on.
When more than one thing presents I think PH issues. Then you have to find out why.

priestriver · Mar 21, 2025

Jimski said:
Without knowing nutes and schedule it looks like cal mag def. OF would have been long drained by now at week 11.
Wait is that a 5 gallon bucket? does it have drain holes? Bottom of plant looks rough. It looks like a few things going on.
When more than one thing presents I think PH issues. Then you have to find out why.

Thanks for the feedback. pH is good but I am still trying to get the FF nutes right (3 yrs in). I provide FF trio nutes very lightly now, like 1/3 or none. pH is 6.0 to 6.3, never higher. With this plant I went quite a bit lighter on nutes due to past Nitrogen burning. This means less CalMag too. I need to read up on that.

I cut off the bad leaves in case it was fungus (tent is wet on walls). Just upped the CAL/Mag. We will see what happens.

I am amazed how much production i end up getting with by stumbling.... last Blue Dream was 7oz.

Thank you!

MickFoster · Mar 21, 2025

I can't help with your deficiency, but you might consider thinning her out and removing that bottom growth close to the soil.

Delps8 · Wednesday at 3:33 PM

It's a nutrient imbalance which is a symptom of insufficient nutrient availability and/or insufficient nutrient uptake.
Easiest one to eliminate is the uptake piece - what are the temperature, RH, how many fans/wind speed, what light are you using, hang height, dimmer switch, and schedule. Big issue is "what changed".

About 50% of nutrient imbalances are a result of temperature+RH+wind speed being so far out of range.

The availability piece covers mixing the chemicals and watering practices (coco reduces the chances that the latter is causing the issue).

"last Blue Dream was 7oz."-that's probably because of light levels. The more light you give cannabis, the larger the yield, as long as light is the limiting factor.

Øleg · Wednesday at 4:37 PM

Sadly I’ve been the one who as soon as I see rust spots I add a bit of cal mag

Jjgrow420 · Wednesday at 4:40 PM

If you're using soil and adding calmag I'd be willing to bet that's the problem right there.

Hollatchaboy · Wednesday at 7:11 PM

Jjgrow420 said:
If you're using soil and adding calmag I'd be willing to bet that's the problem right there.

Agreed.

Southside112 · Wednesday at 10:41 PM

Jjgrow420 said:
If you're using soil and adding calmag I'd be willing to bet that's the problem right there.

Can you please elaborate on this. Thanks.

LewberDewber852 · Thursday at 3:20 AM

Adding a little bit of this, that, and the other thing to a “living” soil has upset its balance and there isnt much way of knowing what’s now in excess or need within your medium. The soil feeds the plant.
As mentioned above I would remove some of that lower vegetation. Personally I’d try to investigate the quality/state of the medium before do anything else besides giving a nice top dress of FFOF and EWC.

Jjgrow420 · Thursday at 4:52 AM

Southside112 said:
Can you please elaborate on this. Thanks.

Sure. You're adding in nutrients you don't need to. So you end up overloading calcium and magnesium, and getting lockout and toxicity.
Cal mag is one of the most overused products.

Southside112 · Thursday at 5:20 AM

Jjgrow420 said:
Sure. You're adding in nutrients you don't need to. So you end up overloading calcium and magnesium, and getting lockout and toxicity.
Cal mag is one of the most overused products.

Are you saying that soil already has an abundance of cal mag and adding is not necessary?

green_machine_two9er · Thursday at 5:27 AM

Southside112 said:
Are you saying that soil already has an abundance of cal mag and adding is not necessary?

Depends on your water really

Hollatchaboy · Thursday at 5:40 AM

green_machine_two9er said:
Depends on your water really

Agreed.
Depends on the soil as well.

Southside112 · Thursday at 6:11 AM

green_machine_two9er said:
Depends on your water really

That's why I am asking for clarity. My local water is 200 plus ppm so I use a hardwater micro. A poster above said if growing in soil do not add cal mag. This confuses me as I have never heard such a thing.

Southside112 · Thursday at 6:11 AM

Hollatchaboy said:
Agreed.
Depends on the soil as well.

What does the soil have to do with it? Are you saying some soil already have an abundance of cal mag?

Southside112 · Thursday at 6:14 AM

I know for instance that for me ffof soil has been really hot lately and I don't have to add additional nutes till later in flower and nothing added in veg. Is this what you guys are saying?

priestriver · Thursday at 6:23 AM

Southside112 said:
That's why I am asking for clarity. My local water is 200 plus ppm so I use a hardwater micro. The op said if growing in soil do not add cal mag. This confuses me as I have never heard such a thing.

I am the op. I didn't say don't add cal mag.
I added very low amount. Much less than FF says to use and they make the soil. Wonderful soil I might add. But .. it's hard to read the soil. Even ppm seems like a black box.
My program which has some success.
FF ocean forest.
Always pH at 6 or so.
Don't add any nutes til 4-5 weeks in, or more, with FF OF.
Add 1/3 what FF says to use. I learned that from using it over 3 years.
Add nutes every other watering at this point.
Skip 2-3 days between watering.

Of all the things I have learned, one is that on this forum, which I use and appreciate, a poster will see many contradictions . 180 degrees out . But that's part of learning. Filtering. Using what makes sense to you and learning as the plants change in front of you. I use a log . It helps me look back.

Southside112 · Thursday at 6:24 AM

priestriver said:
I am the op. I didn't say don't add cal mag.
I added very low amount. Much less than FF says to use and they make the soil. Wonderful soil I might add. But .. it's hard to read the soil. Even ppm seems like a black box.
My program which has some success.
FF ocean forest.
Always pH at 6 or so.
Don't add any nutes til 4-5 weeks in, or more, with FF OF.
Add 1/3 what FF says to use. I learned that from using it over 3 years.
Add nutes every other watering at this point.
Skip 2-3 days between watering.

Of all the things I have learned, one is that on this forum, which I use and appreciate, a poster will see many contradictions . 180 degrees out . But that's part of learning. Filtering. Using what makes sense to you and learning as the plants change in front of you. I use a log . It helps me look back.

I did not mean op. I meant the person that told you if you are adding cal mag to soil that is your problem. Corrected my original post. Cheers.

priestriver · Thursday at 6:25 AM

Southside112 said:
I know for instance that for me ffof soil has been really hot lately and I don't have to add additional nutes till later in flower and nothing added in veg. Is this what you guys are saying?

That seems mostly what I believe but I'm still adjusting. Seems their soil should be the same today as 3 years ago. Manufacturing and consistent product is key

What this heck is this?

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