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OfflineBlackHaze
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Registered: 07/05/20
Posts: 23
Last seen: 4 months, 20 days
what is wrong with this plant?
    #847211 - 01/13/21 06:45 AM (5 months, 11 hours ago)

a few leaves on this plant went dry and brown over night.
it happened after a cold spree but i dont know if that is the cause because they still seem to be appearing occasionally after getting the temps back up.

does anybody have any idea what these leaves might be suggesting?

thank you :heart:





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OfflineGregSanchez
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Registered: 01/13/21
Posts: 1
Last seen: 4 months, 29 days
Re: what is wrong with this plant? [Re: BlackHaze]
    #847212 - 01/13/21 08:14 AM (5 months, 10 hours ago)

A similar problem , this disease appeared on one of my bushes.If you find a solution, add the instructions to the post.Thank you in advance.


Edited by GregSanchez (01/13/21 08:16 AM)


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OfflineBlackHaze
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Registered: 07/05/20
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Re: what is wrong with this plant? [Re: GregSanchez]
    #847213 - 01/13/21 02:37 PM (5 months, 4 hours ago)

Quote:

GregSanchez said:
A similar problem , this disease appeared on one of my bushes.If you find a solution, add the instructions to the post.Thank you in advance.




i definitely will!
it was in the room with two other plants, this one is white widow, so is one of the others, and the other two did not do the same thing, although they did show other signs of being too cold that this plant did not show so much.

i am using biobizz grow and heaven for the veg period. i was told heaven was a waste of time so i did not give it to them. i started including it with their feed at 75% and the room is now consistently warmer so hopefully they improve.

i will keep this thread up to date with my findings, hopefully we can get to the bottom of this!

do you have any photos of yours? also, did anything similar happen in your environment?


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OfflineBlackHaze
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Registered: 07/05/20
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Re: what is wrong with this plant? [Re: BlackHaze]
    #847222 - 01/14/21 02:04 PM (4 months, 30 days ago)

so far my research on this seems to be pointing to phosphorus deficiency.

i have got new heat mats so temperature should be okay now and i will start giving full scheduled feed. i am going to lower my watering too, just in case i am over watering. if that does not work i will start pH balancing to 6.5 again and see how that goes


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Offlinebudgrowerwannabe
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Re: what is wrong with this plant? [Re: BlackHaze]
    #847238 - 01/19/21 12:04 PM (4 months, 25 days ago)

Def a deficiency pho’s or mag? What are you feeding ? Also this is a list of questions you can fill out to help us help u


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Offlinebudgrowerwannabe
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Re: what is wrong with this plant? [Re: budgrowerwannabe]
    #847239 - 01/19/21 12:06 PM (4 months, 25 days ago)

1. Are you growing from seed or clones?

2. How old are your plants?

3. How tall are your plants?

4. What size containers are they planted in?

5.What is your soil mix?

6. How often do you water and what type of water do you use and how much you give per watering?

7. What is the pH of your water?

8. What kind of fertilizer do you use and what is its NPK ratio?

9. Do you foliar feed or spray your plants with anything?

10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")

11. How close are your lights to the plants?

12. What size is your grow space in square feet?

13. What is the temperature and humidity in your grow space?

14. What is the pH of the soil?

15. What is the pH of your run off?

16. Have you noticed any insect activity in your grow space?


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OfflineBlackHaze
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Registered: 07/05/20
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Re: what is wrong with this plant? [Re: budgrowerwannabe]
    #847252 - 01/21/21 07:28 AM (4 months, 23 days ago)

budgrowerwannabe said:
Def a deficiency pho’s or mag? What are you feeding ? Also this is a list of questions you can fill out to help us help u




i am feeding biobizz bio-grow (1ml/L) and bio-heaven (1.5ml/L)


1. Are you growing from seed or clones?
seed

2. How old are your plants?
6 weeks in the picture. 7 weeks + 2 days now

3. How tall are your plants?
maybe about 20cm, but they have been topped and i am training them downwards ready for scrog.

4. What size containers are they planted in?
5L (due to doing 3 plants in a 84x65cm room)(this was advice that i am unsure of and i am thinking about potting up before i put them under scrog)

5.What is your soil mix?
westland jacks magic

6. How often do you water and what type of water do you use and how much you give per watering?
i was giving about 500ml every 2 days at the time. i have lowered it since because i think i am overdoing it. waiting for results.
i was also using the water straight out of the tap (but warmed to about 22°C) without balancing pH, but have since started using distilled white vinegar to balance down to 6.5.

7. What is the pH of your water?
at that point, maybe about pH 8.5 to 9.

8. What kind of fertilizer do you use and what is its NPK ratio?
bio-grow (1ml/L) and bio-heaven (1.5ml/L).
not sure about the NPK ratio. they are shady, it was a gift from a friend to get me started but i plan to phase them out eventually.

9. Do you foliar feed or spray your plants with anything?
no

10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
150W LED (pro-emit model B 150)

11. How close are your lights to the plants?
at that point they were closer, maybe about 55cm, but i have been slowly moving them further away to check for change. i am at about 75cm now.

12. What size is your grow space in square feet?
~5.9 (84cm x 65cm)

13. What is the temperature and humidity in your grow space?
this problem seemed to start after a sudden drop in temps, but typical temps are 25°C-28°C.
i have since added heat mats to the room with a probe in the soil set to 24°C

14. What is the pH of the soil?
seems to be ~6.9 according to my meter, but all soil ever seems to be about the same with that meter so i am not sure if it even works properly.

15. What is the pH of your run off?
have not measured, but will do a proper pre and post pH test next feed

16. Have you noticed any insect activity in your grow space?
only a spider that came out to say hello. he lives behind the mylar but as far as i know spiders are good for weed as they will eat the vegetarians. should i evict him do you think?


its worth noting that i am growing 3 plants using scrog in a space that i was recommended to only grow 2 plants in (hence the small pots). i grew 3 in case one plant struggled, so i think i might just end up accepting the loss on this one.
it seems to have stopped spreading now, or at least slowed right down, so i pruned all the bad leaves and i now have a very bare plant that i think is just going to die.
do you think i should just let it go and pot the other two up into 12" pots?


thank you for the help :heart:


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