All top leaves going yellow ????

C

Chrisjames47

Active Member
Hello people I am just looking for some inputs, I am 7 weeks into flower and all the top leaves on my plants are turning yellow, I read it could be light burn but the closest plant is 18" away. I am using a 600w hps in a 4x4x7 tent with a 4" extraction and now I have a 4"intake fan what I set up yesterday to help with heat problems. I have one big oscilating fan blowing against the walls of the tent because it seems too powerful facing the plants and two 7" fans on the floor. The temperature has been between 25c-32c for the past week and humidity is usually between 55%-75% I know its high but I am hoping my new intake fan might help.
I am currently feeding once a day with canna a&b 1ml per litre untill around 40% runoff. I kepp my ph between 5.5 and 6.5 using drops now my meter is broke. The plant in the pics is the most yellowing one so I just took pics of that but there's 8 more in there and they are all like this.
Any inputs would be appreciated.
Thanks
 

Attachments

O

OBSD

Member
This seems to be normal when you get closer to harvest. Usually they say it happens when people flush the plant at the end and it uses the nutrients in the fan leaves to feed the buds. Cannibalizes itself, ain’t no thang
 
Alter Jean

Alter Jean

Well-Known Member
I don't think the plant is far along enough to be having any type of fading like that yet.
The pictures are hard to tell really but it looks like something else might be wrong.

imo sounds like you're not feeding it enough food, running off too much out of the pot, the tent is too hot and the Canopy is too thick while there is way too much airflow. Plant doesn't look too happy..

Looks like a big nug though.. The top half is demanding more nutrition and a cooler temperature because it is directly under your lighting. The fans directly on the plants and hot temps, you may have fried your terpenes.

I don't know much about A & B so won't be much help on what's missing..

b a l a n c e
 
C

Chrisjames47

Active Member
Alter Jean said:
I don't think the plant is far along enough to be h
Alter Jean said:
I don't think the plant is far along enough to be having any type of fading like that yet.
The pictures are hard to tell really but it looks like something else might be wrong.

imo sounds like you're not feeding it enough food, running off too much out of the pot, the tent is too hot and the Canopy is too thick while there is way too much airflow. Plant doesn't look too happy..

Looks like a big nug though.. The top half is demanding more nutrition and a cooler temperature because it is directly under your lighting. The fans directly on the plants and hot temps, you may have fried your terpenes.

I don't know much about A & B so won't be much help on what's missing..

b a l a n c e
Click to expand...
aving any type of fading like that yet.
The pictures are hard to tell really but it looks like something else might be wrong.

imo sounds like you're not feeding it enough food, running off too much out of the pot, the tent is too hot and the Canopy is too thick while there is way too much airflow. Plant doesn't look too happy..

Looks like a big nug though.. The top half is demanding more nutrition and a cooler temperature because it is directly under your lighting. The fans directly on the plants and hot temps, you may have fried your terpenes.

I don't know much about A & B so won't be much help on what's missing..

b a l a n c e
Click to expand...
Thanks for the advice mate, what did you mean by 'way too much airflow', and with the canopy being thick do you think I should take some of the bigger leaves off?
Thanks again
 
Alter Jean

Alter Jean

Well-Known Member
Chrisjames47 said:
Thanks for the advice mate, what did you mean by 'way too much airflow', and with the canopy being thick do you think I should take some of the bigger leaves off?
Thanks again
Click to expand...
Mmmm.. Na I wouldn't really do much at this point. Maybe adjust where you could, harvest the top portion that looks a bit toasted when it's ready (can't really tell from the pics but looks like lots of pistils there).

Chrisjames47 said:
I have one big oscilating fan blowing against the walls of the tent because it seems too powerful facing the plants and two 7" fans on the floor.
Click to expand...
When I read this I pictured in my head really dry plants. In conjunction with the HID lights.. So I said way too much airflow. It still sounds like lots of hot air being blown around. But I understand why you are doing it with the lights. Hard to really tell you 100% because I am just picturing things in my head and this kush is fckn skrong :blsmoke:
 
C

Chrisjames47

Active Member
Alter Jean said:
Mmmm.. Na I wouldn't really do much at this point. Maybe adjust where you could, harvest the top portion that looks a bit toasted when it's ready (can't really tell from the pics but looks like lots of pistils there).



When I read this I pictured in my head really dry plants. In conjunction with the HID lights.. So I said way too much airflow. It still sounds like lots of hot air being blown around. But I understand why you are doing it with the lights. Hard to really tell you 100% because I am just picturing things in my head and this kush is fckn skrong :blsmoke:
Click to expand...
LOL I'm high myself , yea there are alot of pistils but alot of them are still white, I don't know if the have revegged or there growth has just been stunted with stress they have been flowering for nearly 8 weeks now.
Thanks
 
Alter Jean

Alter Jean

Well-Known Member
Chrisjames47 said:
LOL I'm high myself , yea there are alot of pistils but alot of them are still white, I don't know if the have revegged or there growth has just been stunted with stress they have been flowering for nearly 8 weeks now.
Thanks
Click to expand...
What is the strain? 8 * 7 = 56.

The plants seem to flower forever but that is just us waiting to smoke them.
Hope you have a good weekend. Plant seed and be free

:blsmoke:
 
C

Chrisjames47

Active Member
Autodoctor said:
Looks like light burn to me
Click to expand...
I was thinking that and alot of people have said it but I just realised before but I have 2 small plants I have in there which are like 2 foot tall that have the same problems and they are at leat 4 foot away from the light, so I'm starting to think its a pH problem as my meter broke a few weeks ago so I started using ph paper and drops so I can't be sure I have been 100% accurate with it.
Thanks
 
You must log in or register to reply here.
Top