Help needed to diagnose leaf problem

Troubleshooting
1

This is my first year growing and everything seems to be OK until lately. I have just been doing water and Compost tea minus the molasses (didn’t know about that ingredient).

Anyway lately I’m getting a lot of brown spots on fan leaves and/or yellowing. Mostly brown spots. I just got a PH meter for my soil and most are running about 7-7.2. They’re in Fox Farms Ocean Forest soil, 3 gallon pot grown outside where we’re having Temps in the mid-high 90s and lots of sun - it’s really hot in South Alabama right now.

Any help is appreciated!

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2

Either it’s calcium or something for spilled on the leaves.

Experienced community members and expert staff will be better informed and more capable of providing a more informed answer.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

  • What strain, Seed bank, or bag seed
  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
  • Vessels: Pots, Grow beds, Buckets, Troths
  • PH of Water, Solution, runoff (if Applicable)
  • PPM/TDS or EC of nutrient solution if applicable
  • Indoor or Outdoor
  • Light system
  • Temps; Day, Night
  • Humidity; Day, Night
  • Ventilation system; Yes, No, Size
  • AC, Humidifier, De-humidifier,
  • Co2; Yes, No

Always try to upload a clear picture of any issues you may have to allow the community to assist you.

Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner :slight_smile:

Thanks!

3 Likes
3

Thanks. Copying and pasting:

  • What strain, Seed bank, or bag seed

Sirius Black, Super Silver Haze & Harlequin (1 month old)

Also on my older ones 3 1/2 months old - Pineapple Express and “Pot Luck” ones I got from my brother

  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KN

All soil Fox Farms Ocean Forrest

  • Vessels: Pots, Grow beds, Buckets, Troths

Pots 2-3 gallon plastic black planting pots

  • PH of Water, Solution, runoff (if Applicable)

PH of soil on all 7-7.2

Haven’t got a PH meter for runoff yet. Have it on order.

  • PPM/TDS or EC of nutrient solution if applicable

Had been using only compost tea without molasses. Using Chicken Manure Compost only after sitting for a week.

  • Indoor or Outdoor

Outdoor. South Alabama

  • Light system

Sunshine

  • Temps; Day, Night

Day high 90s (even low 100s)
Night mid-high 70s to low 80s

  • Humidity; Day, Night

Not sure

  • Ventilation system; Yes, No, Size

N/A

  • AC, Humidifier, De-humidifier,

N/A

  • Co2; Yes, No

N/A

Pretty new issue last 2 weeks max. Since we had all the rain come through because of the hurricanes. Didn’t have to water for a bit. Using city water from hose and/or plastic watering can.

4

Unfortunately that inexpensive prong style meter is useless when it comes to pH accuracy. You need something a little better. Usually $30-$50.

The spots appear to be lensing burns from water droplets and direct sunlight. Don’t mist your plants at this point and try not to spill water/nutes on them.

Might be some pests. Look closely under the leaves.

It could possibly be something else, but proper pH and runoff numbers would be needed to dx.

2 Likes
5

Is there meters you would suggest?

6

I had good use from this one before I broke the glass probe :face_with_hand_over_mouth:

There may be less expensive, reliable ones, but I don’t have first hand knowledge of them.

$50 might seem like a lot, but if you want to cultivate with synthetic nutrients it’s necessary to be able to check pH.

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7

Looks like a mag / can def 2 me, foliar spray ? gl man

8

I have some Cal/Mag that’s supposed to be here Wednesday. I had never heard of foliar spraying til now…looked it up.

Should I use the Cal/Mag to spray or is there a better solution?

Your help is greatly appreciated!!!

9

Yes I’m getting that now. Haven’t had any issues before now so hadn’t gotten testers etc. This is my first grow so it has been a HUGE learning experience.

Thank you so much for your help!!!

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