Yellowing of leaves

Bomber2019

Bomber2019

New Member
Hey everyone, I'm new here and on my first grow. 3 autoflowers around 5 weeks old.

Over the last couple of weeks there were signs of some of the leaves yellowing and now I think I may have a serious problem...

Growing in soil
Tap water pH to 6.5
Feeding with Advanced Nutrients micro grow bloom every 4th water, started with low strength and yesterday gave first full strength feed.
I only realised today my pH run off was in the low 5s.
I had been pH water to 6.5 then adding the nutrients however I was NOT doing the pH again. This may have lead to the problem.

Any tips or advise would be greatly appreciated.

Ps.I will upload more photos tomorrow during daylight.
 

Attachments

Kushash

Kushash

Well-Known Member
Bomber2019 said:
Hey everyone, I'm new here and on my first grow. 3 autoflowers around 5 weeks old.

Over the last couple of weeks there were signs of some of the leaves yellowing and now I think I may have a serious problem...

Growing in soil
Tap water pH to 6.5
Feeding with Advanced Nutrients micro grow bloom every 4th water, started with low strength and yesterday gave first full strength feed.
I only realised today my pH run off was in the low 5s.
I had been pH water to 6.5 then adding the nutrients however I was NOT doing the pH again. This may have lead to the problem.

Any tips or advise would be greatly appreciated.

Ps.I will upload more photos tomorrow during daylight.
Click to expand...
What soil are you in?

With the ph adjustment you are supposed to add the nutes then adjust the ph at the end.
What was the ph of the water before you adjusted it to 6.5?
I'm curious if you added ph up or ph down?

I can't tell what your problem is, I never used AN nutes.
Could be a plant that's hungry.
Could be a plant that received bloom nutes to soon.

Are those pictures taken with the grow lights off?
 
Bomber2019

Bomber2019

New Member
Thanks for your reply Kushash,

Soil: Canna Terra Professional

Water from tap: pH 7.1

Added pH down to get to 6.5
(Only realised today I was supposed to pH after adding the nutes)

Light is on but will post more during the day without lights or flash.
 
hotrodharley

hotrodharley

Well-Known Member
The plant to the left has leaves twisting. What kind of light are you using and how high is it over the plants?
 
Bomber2019

Bomber2019

New Member
Hi hotrodharley,

Light: LED HLG 260 QB

The 3 plants are Autos:

Left Plant: Amnesia Auto

Centre and right: unknown Auto

LED Height from plants:

Left plant : 27.5 " (70cm)

Centre plant: 17.5" (45cm)

Right plant: 19.7" (50cm)

New photos added, as mentioned earlier it's currently night here and will upload better photos during day time.

 

Attachments

Wastei

Wastei

Well-Known Member
They are starving from lack of nitrogen. Feed eod or feed, feed water and flush the medium with 3x the volume before switch to flowering and 4th week of flowering.

If you have an EC/TDS meter you should check you runoff. That will give you the final verdict. Clean your runoff trays after every grow to prevent salt buildup and bad readings. Good luck!
 
Wastei

Wastei

Well-Known Member
Bomber2019 said:
Thanks Wastei,

I will definately get the EC/TDs meter.
Click to expand...

You're welcome!

You could also use your pH meter as first measure. If you get higher pH reading on your runoff than what your watering with you need to feed more and vice versa.

The most common thing is overfeeding and low pH in the medium. Your plants will recover fast if you start giving them some more nutrients.
 
Bomber2019

Bomber2019

New Member
Cheers Wastei

What do you recommend I do to correct the problem?
I didn't quite understand the steps...

Add some extra nitrogen to the feeding ?
 
Last edited:
Wastei

Wastei

Well-Known Member
Just mix nutrient and then PH adjust to 6-6.5, most of the times it's not necessary in soil.

Feed at the lower end of chart on the label. Run feeding schedule of Feed-->Feed -->Water

Most Hydroponics nutrient lines is pH adjusted for use with RO water. Canna is the only line I've used that make perfect pH of 6-6.5 and EC of 1.2 with tap water with pH 7.0

I'm not sure what you guys have available. I personally run Dyna Gro because of ease of use, price and pH stability. Never used AN myself.
 
Y

yosim

Well-Known Member
this is a weird one - did the bottom leaves start going yellow before the top leaves? N is mobile so will draw from bottom leaves first - looks like the whole plant is yellow but at the same time it looks kinda healthy! best of luck with it
 
Obepawn

Obepawn

Well-Known Member
Bomber2019 said:
Hey everyone, I'm new here and on my first grow. 3 autoflowers around 5 weeks old.

Over the last couple of weeks there were signs of some of the leaves yellowing and now I think I may have a serious problem...

Growing in soil
Tap water pH to 6.5
Feeding with Advanced Nutrients micro grow bloom every 4th water, started with low strength and yesterday gave first full strength feed.
I only realised today my pH run off was in the low 5s.
I had been pH water to 6.5 then adding the nutrients however I was NOT doing the pH again. This may have lead to the problem.

Any tips or advise would be greatly appreciated.

Ps.I will upload more photos tomorrow during daylight.
Click to expand...
That is the problem. PH after you add nutes. That is feeding 101
 
Merlin1147

Merlin1147

Well-Known Member
Those plants are starving. Feed me! As for the ph, it’s always good to test where your nutrient solution, but. There’s always a but right? You don’t need to adjust the ph of Advanced Nutrients Grow Bloom and Micro. It is their major selling points right on the package. I called AN thinking they had to be out of their mind with all the various water qualities out there and had a great discussion with the tech rep. It has something to do with the chelating matrix or something or other. I was terrified the first time I tried it.
 
You must log in or register to reply here.
Top