what nutrient defficiency is this?

JKp

JKp

Member
this is one of my first defficiencies so i'm not really sure what this is. from what i found it looks like a potassium def but then again i'm not sure
 

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Look over the rest of the plant(s) carefully for other signs or to see if the whole plant shows this. The color shows a slight P def but I would look around more.
 
ComfortCreator said:
Look over the rest of the plant(s) carefully for other signs or to see if the whole plant shows this. The color shows a slight P def but I would look around more.
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yeh i noticed the plant as a whole seems to have the same defect, adding some bloom fert should help im guessing
 
so i tested the ph of the soil and if was around 5.2, and after comparing some pics online i'm inclined to think it's a mag deficiency. what should i do?
 
JKp said:
this is one of my first defficiencies so i'm not really sure what this is. from what i found it looks like a potassium def but then again i'm not sure
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Questions for you. What kind of pots are you using? What are you feeding them and what stage are you in? Is it impacting only older fan leaf or new growth?.

Weird thing is, other than those spots the leaves otherwise appear healthy.
 
jbcCT said:
Questions for you. What kind of pots are you using? What are you feeding them and what stage are you in? Is it impacting only older fan leaf or new growth?.

Weird thing is, other than those spots the leaves otherwise appear healthy.
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im using 15 gallon fabric pots filled with coco/perlite, i feed and water them every other day with liquid fertilizers (biobizz), i'm not adding any calmag to that so that's why i also started thinking it could be that. it appears the plant as a whole has the same problem, which is alot of the leaves have a lighter shade of green
 
I noticed the discoloration as well. If it we're me I would cease all nutrients that you currently feeding with at least for a while. I grow organic and have only been using cal mag all summer. Properly diluted.

If your using liquid fertilizer every other day that is the likely issue. I use cal mag once a week.

This bio bizz your using, what's the numbers on that? For example cal mag is 2-0-0.
 
My guess is temps are slightly low at some point, maybe lights out, and ph is a bit low. Both can cause this issue.

I would be very weary of adding anything they look pretty good but the color is slightly off...see above comments on why I think that is. If fixed it will clear up.
 
I respect the people that do PH levels and stuff like that but I don't waste my time with it. If your feeding a "hot" liquid nute every other day it would very difficult to have any deficiency. It would be quite possible though to cook the hell out of those plants. Just my two cents.
 
ComfortCreator said:
My guess is temps are slightly low at some point, maybe lights out, and ph is a bit low. Both can cause this issue.

I would be very weary of adding anything they look pretty good but the color is slightly off...see above comments on why I think that is. If fixed it will clear up.
Click to expand...
i have 2 plants under identical conditions and only one is suffering, i'm guessing its a ph issue so illbe flushing that ho anyways
 
jbcCT said:
I noticed the discoloration as well. If it we're me I would cease all nutrients that you currently feeding with at least for a while. I grow organic and have only been using cal mag all summer. Properly diluted.

If your using liquid fertilizer every other day that is the likely issue. I use cal mag once a week.

This bio bizz your using, what's the numbers on that? For example cal mag is 2-0-0.
Click to expand...
the biobizz is 4-3-6, so i was planning on flushing them and then watering with some calmag ya think thatll do?
 
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