Dark Red Rusty Spots

Tyleb173rd

Tyleb173rd

Well-Known Member
Calcium Def? It's only on leaves toward the top of the plant and only on a few leaves. How should I proceed?

Edit: Sub's Super Soil, the plant is 29 days from flip. Underneath 800W COB 12-18 inches away
 

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trich0me$

trich0me$

Well-Known Member
Tyleb173rd said:
Calcium Def? It's only on leaves toward the top of the plant and only on a few leaves. How should I proceed?

Edit: Sub's Super Soil, the plant is 29 days from flip.
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Prob so I've been dealing with it as well looks similar to what I've seen on mine
 
Roger A. Shrubber

Roger A. Shrubber

Well-Known Member
thats not calcium. your led is too close, i believe. the light from an led is a targeted spectrum, and much more intense within those bandwidths. back the light off another 6 inches and see if it doesn't help.


and if i'm wrong and it is a deficiency, thats much more likely to be magnesium that calcium
 
Jimdamick

Jimdamick

Well-Known Member
^^^^^
The light is too close, as heat is not what you should be worried about, it is the intensity, which you light has a lot of. The majority of your leaves look good, but watch out for bleaching, which you will get at that height.Back it off to 2', and you should be fine.
 
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mrpuffins

mrpuffins

Well-Known Member
Mr.5280 said:
calcium deficiency for sure and usually Id say just bump up the cal-mag but as you are organic Ill have to suggest crushing up egg shells into a powder and top dressing with them.
Let us know how it turns out.
Best of luck!
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This was my though, ziff it was heat the leaves would curl or react more, this is passively inside the leaf, it's a deficiency
 
thenotsoesoteric

thenotsoesoteric

Well-Known Member
If you're using super soil and you mixed it correctly and let it cook long enough I doubt you're deficient from lack of minerals in soil. I would assume the PH of the soil is out of whack causing nutrients to be locked out or just not absorbed. Get a soil PH meter and take several reading throughout the container. I believe in soil you want it 6.5-6.8 on the PH scale.

I would check everything you can without adding more nutrients because once you add too much it's a pain in the ass to go back.

Cheers and good luck
 
NaturalFarmer

NaturalFarmer

Well-Known Member
Mr.5280 said:
After thinking about it I would have to agree with this. Cal. would be rust dots and these are stripes witch would indicate Mag.
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Turkey shit is high in mag. If you know anyone who has any. A nice warm handful (or cold) mixed in warm water would make your plants happy.
 
Roger A. Shrubber

Roger A. Shrubber

Well-Known Member
too much K can lock out mag. did you start using a high K bloom booster recently?
that just seems awful high up on the plant to be mag, mag should show up on lower growth first.
 
Tyleb173rd

Tyleb173rd

Well-Known Member
I've not added anything other than water. The SS cooked for 8 weeks. I weigh and measure everything according to the recipe. FWIW, it's only on a few plants and it's not very abundant.
 
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