[mrgrowit]

Can you give us some more information?:

What strain is it?
How long has it been in Veg?
Indoor or outdoor?
Soil or coco?
What is in your mix?
What size pot?
Size of grow space (LxWxH)?
Make and model of grow light?
Light distance from the top of the plants?
Temperature in the environment?
Humidity in the environment?
PH of medium?
EC/PPM of medium?
Any Pests?
How often are you watering?
Type and strength of nutrients used?

Here is some more info on iron deficiency:
https://mrgrowit.com/post/iron-deficiency-in-cannabis-plants/

[mrgrowit]

@kingcharlesb your plants are looking good! Nice job so far

[mrgrowit]

By the looks of  them and the fact you mention the trichomes are still clear, I personally wouldn’t have flushed. Did you flush because the plant was having issues or did you flush because you feel you will be harvesting them in 2 weeks (like you mentioned in your past post)?

[mrgrowit]

I am actually in Vegas too and may be able to help you out with some equipment that I no longer use. I’m sending you an email now.

I also forgot to post a link for seed sources: https://mrgrowit.com/post/seeds/

[mrgrowit]

Yeah many of the leaves look really dark as if there is nitrogen toxicity. You could be locked out so it’s causing other problems. If giving the plant plain water isn’t allowing the plant to recover, a flush may be needed in the short future.

[mrgrowit]

Lots more information is needed in order to properly diagnose. Read this post so you know what to include:

https://mrgrowit.com/forums/topic/read-me-first/

[mrgrowit]

After the flush I’d give it several days to help the soil get to a better moisture level. Often times after flushing, the plant will droop; this is due to too much moisture in the medium causing a lack of oxygen in the root zone. But if you give it time, it should bounce back.

To answer your question about lowering the nutrients before harvest. This is a highly debated topic. Some people will try to lower the PPM as much as possible while others will say that’s bro-science and you can feed all the way until the end. When I use synthetic nutrients, I’m usually cutting off nutrients 1-2 weeks before harvest depending on how the plants looks. Can you post a pic so we can see how your plant looks?

[mrgrowit]

How far away is the grow light from the top of the plant? Got a pic so we can see what you’re talking about?

[mrgrowit]

Are they recovering or are you still seeing issues after the flush? I know quite a few people that like to run a bit lower of pH than that so if you’re not seeing a recovery you may want to try that.

[mrgrowit]

I’m glad to hear they are recovering!

[mrgrowit]

I just double checked and the PPF & PPFD information was pulled correctly. Remember, PPFD is measured as µmol/m²/s while PPF is measured as µmol/s … That might be where the confusion is. Or the confusion may be because the PPFD I’ve listed is the dead-center reading they show on the grow light’s PAR chart.

Here is an example… In that article under the HLG 100 V2, I’ve listed the PPFD as 640 µmol/m²/s and the PPF as 225 µmol/s… Those numbers come directly from one of the trusted sources linked within the article. Link to the grow light listing to confirm those numbers: https://bit.ly/3uXxgxk

Hope this helps.

[mrgrowit]

Without the PPM measurement, we are just guessing what the problem could be. It could be too low of PPM indicating it needs a feeding, or too high of PPM causing a nutrient lockout. Without the pH measurement, we don’t know if the medium is in the acceptable range for nutrient uptake. If the pH in the medium is too high or too low, you could get nutrient lockout and see deficiencies.

But it looks like you’re close to harvest so I’m guessing you’ll just ride it out?

Cheers man!

[mrgrowit]

Thanks for the guest suggestion! I’ll add them to the list of potential guests.

[mrgrowit]

What pH and PPM are you running in that hydro setup?

[mrgrowit]

What nutrients have you been feeding the plant and how often? Also, what is the pH and PPM of the soil runoff?

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