Auto flower deficiency?

Rabomagico

New Member

• Mar 28, 2019

• #1

Hey, im quite concerned as it is my first grow. I have a few plants in a small tent under 2 55W cobs. This particular auto is in week 8. I know my yield will be quite low. The plant has started turning brown in the upper leaves. I thought it was nute burn but after flushing it just got worse. I think its underfeed so im waiting on the soil to dry. Whats your opinion?

 

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3rd Monkey

Well-Known Member

• Mar 28, 2019

• #2

Temp, humidity, ph, light distance and calmag?

 

Rabomagico

New Member

• Mar 28, 2019

• #3

3rd Monkey said:

Temp, humidity, ph, light distance and calmag?

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Light distance is around 20cm, temps 20-27. I dont test ph every water since I use biobizz ferts and soil and it says its not necessary, anyways ive used strips and its always around 6. Rh is 50%.

 

Rabomagico

New Member

• Mar 28, 2019

• #4

Its getting worse.

 

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3rd Monkey

Well-Known Member

• Mar 28, 2019

• #5

Your light is very close. What kind is it?

 

3rd Monkey

Well-Known Member

• Mar 28, 2019

• #6

Never mind, I just looked. Yea, that seems close I think.

@hotrodharley

 

Rabomagico

New Member

• Mar 28, 2019

• #7

3rd Monkey said:

Your light is very close. What kind is it?

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2 diy cob 3590. I havent experienced light burn during the grow so I dont think its the lights. Im very clumsy in the nute factor so I cant figure out if its a deficiency or overwatering.

 

3rd Monkey

Well-Known Member

• Mar 28, 2019

• #8

If it's not lights or temps, it could be you're over watering or your ph is whacked. I don't use nutes that don't "require" ph, but I've seen lots of problems with them.

Either way, looks like your root zone is unhappy. Pick your pots up. Water when light. Check your ph for a while just to be sure.

 

C

CannaCountry

Well-Known Member

• Mar 29, 2019

• #9

Your girl appears short on Ca. I would revisit your pH; check it and check it often, regardless of what your nutrient manufacturer tells you. Remember she's an auto so tread lightly with your changes; you can't afford to set them back any further than necessary. Good luck.

 

hotrodharley

Well-Known Member

• Apr 5, 2019

• #10

3rd Monkey said:

Never mind, I just looked. Yea, that seems close I think.

@hotrodharley

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Remember these symptoms generally appear only in flower so no damage in veg from lights is no surprise.