Hello I have a plant that recently started turning yellow with brown spots. Not all leaves are affected but it seems to keep progressing. I noticed it after giving the plants some cal/mag and thought maybe that was the problem but I’m not sure. I feed with the fox farm trio and beastie blooms every other watering which is every 4 days. The other watering I water with molasses. I am not using grow big. 1 other plant is starting to get some lighter green leaves also. Can it be too much nutes.? Only feeding at half strength. Thanks . Will post a better pic later tonight when I get home but here are a couple.
Yellow with brown spots
- Thread starter Mijnosirrom
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I'd say a Nitrogen shortage. Are you following the feeding schedule for the Fox Farm? A 1/2 dilution is perfect, unless you aren't following the schedule or you are adding other bottled nutrients...
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@Mijnosirrom 
welcome to AFN. You did not say what your medium is?
Your nutrients have become out of balance. Read this to understand balance and why it is important to use ALL of the products on a schedule.
www.autoflower.org
Fill out this form the best you can:
Please fill in this form: (copy and paste part is below, this first one tell what specifically to include)
-Problem: (brief description)
-Medium/grow method: soil; soilless-- coco, or peat based like Promix, etc. (please provide the actual product name); DWC, NFT, etc.
-Feed and supplements used: include brand, dosage/strength, frequency of feeding and watering (alone); method-- by hand, drippers, rercirc' or drain-to-waste,... N-P-K #'s too if you can!
-Water source: RO/DI; tap- dechlorinated-?..... EC or TDS reading; pH (don't bother with this on RO/DI, do bother with TDS/EC though to confirm it's working well enough)
-Strain and age
-Climate: night and day ambient T and RH%; res' temperatures; any extremes in T/RH% exposure
- Light used: HID, LED, COB, combo of,... wattage; light cycle hours (20/4, 18/6 , etc.); distance to tops....
-Additional info: PH in the root zone. How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..
--Pictures including WHOLE PLANT PICS, and troubled leaves.. use normal light or flash as other light sources ruin color rendering, critical for diagnostics! Turn off the grow lights.
✂ - - - - - - - - - - -
(copy and paste)-->
Problem:
Medium/grow method:
Feed: and supplements used:
water source:
PH in the root zone:
Strain/age:
light used:
Climate:
Additional info:
welcome to AFN. You did not say what your medium is?Your nutrients have become out of balance. Read this to understand balance and why it is important to use ALL of the products on a schedule.
Tutorial - A word on Nutrients
The proper use of “salt” based fertilizer to grow Auto Flowering Cannabis. Salts: Natural and man made any chemical compound formed from the reaction of an acid with a base, with all or part of the hydrogen of the acid replaced by a metal or other cation. Learning how to use salt based...
www.autoflower.org
Fill out this form the best you can:
Please fill in this form: (copy and paste part is below, this first one tell what specifically to include)
-Problem: (brief description)
-Medium/grow method: soil; soilless-- coco, or peat based like Promix, etc. (please provide the actual product name); DWC, NFT, etc.
-Feed and supplements used: include brand, dosage/strength, frequency of feeding and watering (alone); method-- by hand, drippers, rercirc' or drain-to-waste,... N-P-K #'s too if you can!
-Water source: RO/DI; tap- dechlorinated-?..... EC or TDS reading; pH (don't bother with this on RO/DI, do bother with TDS/EC though to confirm it's working well enough)
-Strain and age
-Climate: night and day ambient T and RH%; res' temperatures; any extremes in T/RH% exposure
- Light used: HID, LED, COB, combo of,... wattage; light cycle hours (20/4, 18/6 , etc.); distance to tops....
-Additional info: PH in the root zone. How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..
--Pictures including WHOLE PLANT PICS, and troubled leaves.. use normal light or flash as other light sources ruin color rendering, critical for diagnostics! Turn off the grow lights.
✂ - - - - - - - - - - -
(copy and paste)-->
Problem:
Medium/grow method:
Feed: and supplements used:
water source:
PH in the root zone:
Strain/age:
light used:
Climate:
Additional info:
Problem:yellowing leaves/ lots of brown spots
Medium/grow method:fox farm ocean forest and happy frog 50/50
Feed: and supplements used:fox farm big bloom and tiger bloom at 1/2 strength. Also beastie blooms. I feed 1/2 strength every other watering. And water with molasses between feedings. Feed water feed water…
water source: I use tap water. It comes out about 7.5ph and about 80-90 ppms. I ph up and/or down to 6.3-6.5ish
PH in the root zone: usually similar to what I put in
Strain/age: 4 haze xl’s from homegrown cannabis co. And 1 UK cheese from growers choice. The plant I am writing about is the UK cheese, although some of the other ones are starting to lighten up now. For one I am using organic nutes from homegrown cannabis co and have no problems. They are 7 1/2 to 9 weeks old. The UK cheese is the youngest.
light used: spider farmer se5000 LED 480watt at 70 %. I am running it 20/4 and it is about 15” from the tops although a couple branches are a little higher, but show no stress from that.
Climate: Temperature is about 75f give or take a couple degrees as it fluctuates. RH is about 55 to 62%
Additional info: The plant has been affected for about a week and has been getting worse pretty fast. There are others starting to get lighter which worries me. Like I said above I have the fox farm trio..but I do not use the grow big. I did think maybe it was nitrogen and was going to give it some grow big yesterday, but decideD not to thinking just plain water might be best. Thank you for all thehelp. If you need to know anything else please ask. Here are some more pictures.
Medium/grow method:fox farm ocean forest and happy frog 50/50
Feed: and supplements used:fox farm big bloom and tiger bloom at 1/2 strength. Also beastie blooms. I feed 1/2 strength every other watering. And water with molasses between feedings. Feed water feed water…
water source: I use tap water. It comes out about 7.5ph and about 80-90 ppms. I ph up and/or down to 6.3-6.5ish
PH in the root zone: usually similar to what I put in
Strain/age: 4 haze xl’s from homegrown cannabis co. And 1 UK cheese from growers choice. The plant I am writing about is the UK cheese, although some of the other ones are starting to lighten up now. For one I am using organic nutes from homegrown cannabis co and have no problems. They are 7 1/2 to 9 weeks old. The UK cheese is the youngest.
light used: spider farmer se5000 LED 480watt at 70 %. I am running it 20/4 and it is about 15” from the tops although a couple branches are a little higher, but show no stress from that.
Climate: Temperature is about 75f give or take a couple degrees as it fluctuates. RH is about 55 to 62%
Additional info: The plant has been affected for about a week and has been getting worse pretty fast. There are others starting to get lighter which worries me. Like I said above I have the fox farm trio..but I do not use the grow big. I did think maybe it was nitrogen and was going to give it some grow big yesterday, but decideD not to thinking just plain water might be best. Thank you for all thehelp. If you need to know anything else please ask. Here are some more pictures.
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I feed every other watering but I do not use the grow big. I thought that but decided to give straight water instead thinking I’ve been giving too much.
@Mañ'O'Green
Do you have any idea what is going on?
Do you have any idea what is going on?
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