Yellowing of small top leaves (week 4 flowering) is this normal?

N

No12u

Active Member
She stop stretching on week three. Do you think it’s a nitrogen deficiency. I know the bigger leaves start yellowing as the plant progresses but the top leaves have me concerned. Other than that they has been thickening and smells amazing.

Soil- Mother earth potting soil

Lights- TS1000 mars hydro 75-78F/Rh 35-43%

Strain- I95 Photo.

Feeding- Cyco platinum Bloom A&B and Uptake every 4-5 days.

Ph- 6.4-6.5.

Thanks for the insights and advice



 

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Looks mag deficient, pretty common when you first switch to LEDs. You could try adding some epsom salts to your mix at .5 to 1 g per gallon. I'd start with 1g per gallon the first couple of feeds, then switch to .5 g per gallon after that and see if the new growth improves. Good luck!
 
The nutes you're feeding have plenty from what I see on their label. Expensive stuff. I only feed hydro nutes in soil every 3rd watering.
 
inth3shadowz said:
The nutes you're feeding have plenty from what I see on their label. Expensive stuff. I only feed hydro nutes in soil every 3rd watering.
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The cyco feed schedule is confusing to me. Coming from FF trio feeding cyco every watering seem like a lot. Do you think thats why it’s yellowing?
 

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I use the same growing medium and nutrients, they are hungry. CYCO's feed chart is in ml PER LITER just so you know. I made that mistake. You multiply their recommended dose on the feed chart by 4 to get ml/gal dosing (Says in their catalogue).

At this stage of their life you should be giving them around 12ml/gal of CYCO A & B. Uptake is good stuff you can use it every watering It's Humic Acid from Leonardite.
 
inth3shadowz said:
The nutes you're feeding have plenty from what I see on their label. Expensive stuff. I only feed hydro nutes in soil every 3rd watering.
Click to expand...
No12u said:
The cyco feed schedule is confusing to me. Coming from FF trio feeding cyco every watering seem like a lot. Do you think thats why it’s yellowing?
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You feed every single time with CYCO. Are you in Mother Earth Coco? I didn't think their SOIL was that widespread yet?
 
Your PH Should be 5.5-6.2 range with CYCO. I would recommend 5.7-6.0 PH for best results. I'm betting you were mixing the nutrients using the per/liter instructions instead of per/gallon. That would mean you're running 4 times less nutrients than you should be which would explain the yellow plants. That and the high PH in coco.
 
calvin.m16 said:
I use the same growing medium and nutrients, they are hungry. CYCO's feed chart is in ml PER LITER just so you know. I made that mistake. You multiply their recommended dose on the feed chart by 4 to get ml/gal dosing (Says in their catalogue).

At this stage of their life you should be giving them around 12ml/gal of CYCO A & B. Uptake is good stuff you can use it every watering It's Humic Acid from Leonardite.
Click to expand...
Thanks for the reply.
 
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No12u said:
No I am in Mother earth potting soil.
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So you're using the Mother Earth Terracraft or their Groundswell? In that case you shouldn't need to add much nutrients.. They are definitely hungry looking though and even in soil I'd try to pull your PH down a bit if you're using nutrients like CYCO.

Were you dosing per/liter or per/gallon?
 
calvin.m16 said:
Your PH Should be 5.5-6.2 range with CYCO. I would recommend 5.7-6.0 PH for best results. I'm betting you were mixing the nutrients using the per/liter instructions instead of per/gallon. That would mean you're running 4 times less nutrients than you should be which would explain the yellow plants. That and the high PH in coco.
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I actually switched from ff trio to cyco a&b during flowering. First feed I gave them around 1/2 dose to see how they react but have since up’ed it to 12ml per gallon the last 2-3 feedings. Besides the first low dosage of nutes I have been keeping my PH at 6.5 using distilled water. Maybe thats why they are yellowing? I spoke to a rep from their company and he said 5.5-6.0 was for hydro not soil. I’ll drop my PH down to your recommendations and see if it helps. Sorry for the newbie replies and questions this is my second grow. Thanks dude.
 
calvin.m16 said:
So you're using the Mother Earth Terracraft or their Groundswell? In that case you shouldn't need to add much nutrients.. They are definitely hungry looking though and even in soil I'd try to pull your PH down a bit if you're using nutrients like CYCO.

Were you dosing per/liter or per/gallon?
Click to expand...
Mother earth terra craft is what I’m using. For the first feed I went half dose then full dosing since then.
 
No12u said:
I actually switched from ff trio to cyco a&b during flowering. First feed I gave them around 1/2 dose to see how they react but have since up’ed it to 12ml per gallon the last 2-3 feedings. Besides the first low dosage of nutes I have been keeping my PH at 6.5 using distilled water. Maybe thats why they are yellowing? I spoke to a rep from their company and he said 5.5-6.0 was for hydro not soil. I’ll drop my PH down to your recommendations and see if it helps. Sorry for the newbie replies and questions this is my second grow. Thanks dude.
Click to expand...

That is what it's all about bro. Don't ever be sorry for asking questions and having willingness to learn. Lots of people on here are assholes and will beat you down for trying. I'd feed then give them a few days to see how they respond. Definitely get your PH more in the 6.0-6.2 range considering you're using that soil. I think the High PH could certainly be locking out the CYCO.

p.s your text is for some reason grey colored. If you click this box you can make it black so it doesn't blend in with the page.
1643542951467.png
 
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calvin.m16 said:
That is what it's all about bro. Don't ever be sorry for asking questions and having willingness to learn. Lots of people on here are assholes and will beat you down for trying. I'd feed then give them a few days to see how they respond. Definitely get your PH more in the 6.0-6.2 range considering you're using that soil. I think the low PH could certainly be locking out the CYCO.

p.s your text is for some reason grey colored. If you click this box you can make it black so it doesn't blend in with the page.
View attachment 5076924

[/QUOTE
Click to expand...

will do, Thanks for your help I really needed it. I just changed the color hope it fixes the text issue.
 
calvin.m16 said:
That is what it's all about bro. Don't ever be sorry for asking questions and having willingness to learn. Lots of people on here are assholes and will beat you down for trying. I'd feed then give them a few days to see how they respond. Definitely get your PH more in the 6.0-6.2 range considering you're using that soil. I think the High PH could certainly be locking out the CYCO.

p.s your text is for some reason grey colored. If you click this box you can make it black so it doesn't blend in with the page.
View attachment 5076924
Click to expand...
Hey buddy hope all is well. Do you mind helping me again. I did what you suggested and the plants have not changed for the better but haven’t gotten worse except slow growth. Mind if i ask you a question or two?
 
The answer to your question is in reply #2. LEDs require calmag addition and typically supplementAl heat. Your plants are showing magnesium deficiency. Epsom salt would have done the trick on those if added as soon as the old lower leaves started to show yellowing in the margins with green veins. Cal mag deficiency will cause insufficient uptake of nutrient. Correct cal mag and make sure it’s at least 80f in there when the lights are on. Adding more nutes May burn those plants if magnesium deficiency is corrected.
 
fskitch said:
The answer to your question is in reply #2. LEDs require calmag addition and typically supplementAl heat. Your plants are showing magnesium deficiency. Epsom salt would have done the trick on those if added as soon as the old lower leaves started to show yellowing in the margins with green veins. Cal mag deficiency will cause insufficient uptake of nutrient. Correct cal mag and make sure it’s at least 80f in there when the lights are on. Adding more nutes May burn those plants if magnesium deficiency is corrected.
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Since this post I’ve lowered my ph to 6.2 for the last two feeds with calmag included.
Calvin.m16 was correct when he stated my ph was to high, when i tested the runoff it was at 7.1. I finally received my ppm meter and when i tested the runoff the ppm was 197. I then tested the feed in water using cyco and clavins recommendations 12ml per gallon the ppm was 680, which is way to low from my understanding after researching the ppm for a 6 wk plant. Everything I’ve read says it should be at least 1000-1400. I doubled the dose of feed and i got 1114 ppm. I haven’t feed using the double dose yet was hoping to hear from cavin.m16 as he says he has the same nutes and lights. Is it safe to say they are not eating my nutes and turning yellow because ppm is way off.

edit: Tent pictures are from yesterday. Babies out tent are today after flush.
 

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No12u said:
Since this post I’ve lowered my ph to 6.2 for the last two feeds with calmag included.
Calvin.m16 was correct when he stated my ph was to high, when i tested the runoff it was at 7.1. I finally received my ppm meter and when i tested the runoff the ppm was 197. I then test the feed in water using cyco and clavins recommendations 12ml per gallon the ppm was 680 which is way to low from my understanding after researching the ppm for a 6 wk plant it should be at least 1000-1400. I doubled the dose of feed and i got 1114 ppm. I haven’t feed using the double dose yet was hoping to hear from cavin.m16 as he says he has the same nuts and lights.
Click to expand...
Sounds like you are all over it with a bit of help. "FEED ME, SEYMORE" -Little shop of Horrors:clap:
 
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