[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?

[mrgrowit]

What is the pH and PPM of the soil runoff? Sounds like you’re growing with organic inputs; what fertilizer have you fed and when? Could be anything from a lack of nutrition, imbalance in the soil, pH being off, or something else.

[mrgrowit]

I concur with @CamZ

[mrgrowit]

I’d rock two lights with a flowering coverage area in that space – one for each side of the grow space. Here’s my picks for the best LED grow lights for that space:

Best LED Grow Lights 2023 | 4×4 Coverage Area

[mrgrowit]

Hard to tell you for sure. A soil runoff pH and PPM can help us see if things are in their ideal ranges or not.

[mrgrowit]

How much fertilizer did you use and when did you apply it? By just looking at it, I suspect magnesium deficiency:

Magnesium Deficiency in Cannabis Plants

[mrgrowit]

How does the plant look? You might be able to just ride it out if the plant is fine since you’re so close to harvest. But if you think it needs a flush, go for it.

[mrgrowit]

What is the pH and PPM of the soil runoff?

[mrgrowit]

Looking great so far! Nice job

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