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How to fix yellow fan leaves 🍃

  • Thread starter Thread starter GentleFarmer89
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How to fix yellow fan leaves 🍃

GentleFarmer89 18 Replies 1,070 Views
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GentleFarmer89

GentleFarmer89

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#1
Here are some photos:
Could it be lack of phosphorus or nitrogen?
How to duyellow fan leaves
 
#10
And what are you using for soil? Are you feeding anything? 650 ppfd, if accurate, is kind of high for what looks to be a younger plant. What is the wattage of your light and distance from plants?
 
#15
You know what you fed it so you know whether you should keep reading this or just scroll to the next reply.

Looks to me like it got a heavy dose of potassium and that's okay, right nute at the right time, just wrong concentration. You can dilute it down some with a little extra water the next time they need it, or the next couple waterings. There's a different discoloration a little further down that's paler and further in from the edge and that has me wondering if the pH could have gotten out of whack and started going up. To check that, you can throw a pH pen into some of your runoff and take a reading. Presuming you're in soil, it should fall somewhere between 6-7. If it's in normal range, that's good. Just be careful when you're mixing nutes into the water that you do them in order to avoid negative reactions like unstable pH and nutes canceling each other out.
 
#16
Ninjadogma said:
You know what you fed it so you know whether you should keep reading this or just scroll to the next reply.

Looks to me like it got a heavy dose of potassium and that's okay, right nute at the right time, just wrong concentration. You can dilute it down some with a little extra water the next time they need it, or the next couple waterings. There's a different discoloration a little further down that's paler and further in from the edge and that has me wondering if the pH could have gotten out of whack and started going up. To check that, you can throw a pH pen into some of your runoff and take a reading. Presuming you're in soil, it should fall somewhere between 6-7. If it's in normal range, that's good. Just be careful when you're mixing nutes into the water that you do them in order to avoid negative reactions like unstable pH and nutes canceling each other out.
Click to expand...
Thanks yall im checking ph levels now.
 
#18
Ninjadogma said:
You know what you fed it so you know whether you should keep reading this or just scroll to the next reply.

Looks to me like it got a heavy dose of potassium and that's okay, right nute at the right time, just wrong concentration. You can dilute it down some with a little extra water the next time they need it, or the next couple waterings. There's a different discoloration a little further down that's paler and further in from the edge and that has me wondering if the pH could have gotten out of whack and started going up. To check that, you can throw a pH pen into some of your runoff and take a reading. Presuming you're in soil, it should fall somewhere between 6-7. If it's in normal range, that's good. Just be careful when you're mixing nutes into the water that you do them in order to avoid negative reactions like unstable pH and nutes canceling each other out.
Click to expand...
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#19
If that's soil and not coco it's a smidge on the low side at 5.8, might be starting to get a little salty down there too. You can just run a little extra tap water through the soil the next couple waterings, don't try and fix it in a single watering you put too much in and good soil microbes start leaving with the water. Same with the other one, little by little you can raise it maybe in .1 increments until it gets to 6.5 and then stop.
 
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