Plant Issues (ph?)

E

et133et

Active Member
So I have 4 plants growing right now and only half of one plant is having serious issues. The pH is sitting at 6.1 and I have been using the fox farms nutrient schedule on them in Happy Frog soil. All water has been sitting out to remove chlorine. It has been flushed with clean ph'ed water with a flushing formula to remove excess salts. The strain in question is Strawberry Cheezecake. Here are some pics. It looks like a manganese or cal/mag issue to me. It isnt really on the leaves where the buds are but are on those below it and mostly only on the left side of the plant. Im running a 880W solar storm Cali lightworks LED light with active ventilation keeping the temps are 81degrees and the RH around 35% as I am in colorado and its quite arid. Any suggestions? All I can think of to do is raise the pH a few points.

 
Buba Blend

Buba Blend

Well-Known Member
et133et said:
So I have 4 plants growing right now and only half of one plant is having serious issues. The pH is sitting at 6.1 and I have been using the fox farms nutrient schedule on them in Happy Frog soil. All water has been sitting out to remove chlorine. It has been flushed with clean ph'ed water with a flushing formula to remove excess salts. The strain in question is Strawberry Cheezecake. Here are some pics. It looks like a manganese or cal/mag issue to me. It isnt really on the leaves where the buds are but are on those below it and mostly only on the left side of the plant. Im running a 880W solar storm Cali lightworks LED light with active ventilation keeping the temps are 81degrees and the RH around 35% as I am in colorado and its quite arid. Any suggestions? All I can think of to do is raise the pH a few points.

Click to expand...
It also look similar to septoria leaf spot.
https://www.google.com/search?q=cannabis+septoria+leaf+spot&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjql7mLgMbXAhVD5WMKHXcnDa0Q_AUICigB&biw=1301&bih=621
 
Stink Bug

Stink Bug

Well-Known Member
Fox Farms nutrients seriously lack Ca and Mg. And that appears to be what that plant is lacking. I would add a bottle of CalMag to your line up.
I seriously doubt pH is off.
 
Buba Blend

Buba Blend

Well-Known Member
Stink Bug said:
Fox Farms nutrients seriously lack Ca and Mg. And that appears to be what that plant is lacking. I would add a bottle of CalMag to your line up.
I seriously doubt pH is off.
Click to expand...
I was thinking calcium also. The location of the problem is where you would see a calcium deficiency and it might be that but the big round spots do not look like calcium def.
Compare images of calcium def to leaf septoria below on google.
https://www.google.com/search?q=cannabis+calcium+deficiency&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjKraqFmMbXAhWErlQKHXKsARYQ_AUICigB&biw=1301&bih=621
https://www.google.com/search?q=can...gMbXAhVD5WMKHXcnDa0Q_AUICigB&biw=1301&bih=621
 
Stink Bug

Stink Bug

Well-Known Member
The larger spots appear to be just advanced necrosis from the calcium deficiency. The yellowing and spots seem to have begun at the tips of the leaves spreading inward.
Septoria symptoms are much more random in my experience.
 
Buba Blend

Buba Blend

Well-Known Member
Stink Bug said:
The larger spots appear to be just advanced necrosis from the calcium deficiency. The yellowing and spots seem to have begun at the tips of the leaves spreading inward.
Septoria symptoms are much more random in my experience.
Click to expand...
That was what I was wondering, if they would have been more random.
 
Lite

Lite

Well-Known Member
nothing wrong. its flowering, the leaves will die as the flowers pull nutrients they need from them.
 
SPLFreak808

SPLFreak808

Well-Known Member
I agree with stink bug, that looks like advanced cal def.

Sometimes they show differently with certain strains.

Could be hitting them too hard with tigerbloom or could just be simply lacking cal & mag.
 
Stink Bug

Stink Bug

Well-Known Member
Calcium is immobile within the plant. If you see signs of a deficiency then its deficient. And if a plant is cannabilizing itself to finish you are probably losing yield and potency.
 
You must log in or register to reply here.
Top