I’m thinking it’s MANGANESE??

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Blue_Walker

Active Member
I have some spotting on older fan leaves. I’ve attached pics of the other all plant and those specific spots. I was thinking it could be a manganese deficiency

I’m growing a tangerine Dream auto. It’s approximately 38 days old. I grow in Fox Farm ocean Forest and at approximately 21 days I top dressed with 2 tbs of Dr. Earth flower girl and 2 tbs of Dr. Earth home grown. I water using 6.0-6.5 PH tap water that has been left out for a minimum of 24 hours. I’ve been watering once dry every three to five days. I also use recharge once a week during one of the watering. My lighting is a 185 watt HLG QB 96v2 hung at 28 inches.
The Pics!
 
B

Blue_Walker

Active Member
Soft water from the tap (city water). I thought calcium at first but I added extra in with the Dr. Earth Home Grown so I didn’t think it would be an issue. I also added some dolomite lime into the soil before the grow started as well.
 
myke

myke

Well-Known Member
I think since you added dolomite lime theres no need to ph your water so low.I would try straight water or 6.5-6.8 and see if it clear up.Ph is always the first thing to adjust and go from there.Good luck.
 
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Blue_Walker

Active Member
myke said:
I think since you added dolomite lime theres no need to ph your water so low.I would try straight water or 6.5-6.8 and see if it clear up.Ph is always the first thing to adjust and go from there.Good luck.
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okay I’ll do that then. My water comes out at a high 8 and sometimes 9ph from the tap. I’ll PH it to 6.8 and see if the issue clears up!
 
B

Blue_Walker

Active Member
Red Eyed said:
Looks as it's a calcium deficiency. Just remember that damaged leaves wont recover even if the problem is fixed.
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I’ll probably just end up trimming off the ones that are the worse affected. I have enough leaves to go around. Just hoping raising the PH of the water will do the trick.

I read in a sticky on this forum you could “treat by foliar feeding with one teaspoon of dolomatic lime per quart of water until condition improves.” Had anyone tried this?
 
myke

myke

Well-Known Member
Blue_Walker said:
okay I’ll do that then. My water comes out at a high 8 and sometimes 9ph from the tap. I’ll PH it to 6.8 and see if the issue clears up!
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Ca is a finicky bitch,your lime has Ca/Mg in it,im not sure about the amendments.Your water could also be a problem with that high of ph.
 
B

Blue_Walker

Active Member
myke said:
Ca is a finicky bitch,your lime has Ca/Mg in it,im not sure about the amendments.Your water could also be a problem with that high of ph.
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Ya one of the amendments has calcium to also. Dr. Earth Home Grown had 4.75% in the guaranteed analysis. Ya my water is super high PH. I always PH down with apple cider vinegar.
 
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Blue_Walker

Active Member
She’s been pretty droopy the past few days, I think I overwatered last time. This morning she was pretty dry and the pot was light so I ended up watering her with a 1/2 gallon of water PH 6.83 with some recharge in it. She seemed to bounce back a little bit after about 8 hours of the lights being on. Hopefully that resolves the CA issue too.

Updated pic

I tried to attach a jpeg but it wouldn’t let me this time around.
 
myke

myke

Well-Known Member
Have you been using apple cider vinegar for a while?I dont know much about it,does your soil have lime or any ph adjustment in it?
 
B

Blue_Walker

Active Member
myke said:
Have you been using apple cider vinegar for a while?I dont know much about it,does your soil have lime or any ph adjustment in it?
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ya I have dolomite lime in the soil. I’ve used apple cider vinegar for the duration of its life, for my past grow and also for other veggies such as tomatoes and peppers.
 
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