Can someone diagnose this problem please?!

Smithy1

Smithy1

Well-Known Member
I don't know if this is in the right place but Heyy hoo, Anyway I have 4 plants in my grow room and one off them has had this on The leaves for around a week now,Can anyone give me a clue to what it is??


I'm growing in jacks magic soil.

I'm also using A+B by canna they are getting 5ml off each into 2 litres off water, My other plants are doing fine as wine it's just this one that I'm having trouble with, I clean my grow room every 3-4 days for pests and things and I haven't found any yet ( Touchwood)

Thanks in advance folks!
 

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SchmoeJoe

SchmoeJoe

Well-Known Member
Smithy1 said:
I don't know if this is in the right place but Heyy hoo, Anyway I have 4 plants in my grow room and one off them has had this on The leaves for around a week now,Can anyone give me a clue to what it is??


I'm growing in jacks magic soil.

I'm also using A+B by canna they are getting 5ml off each into 2 litres off water, My other plants are doing fine as wine it's just this one that I'm having trouble with, I clean my grow room every 3-4 days for pests and things and I haven't found any yet ( Touchwood)

Thanks in advance folks!
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Looks like they need a cal-mag supplement.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
Smithy1 said:
Cheers Mate, I'll look into ordering some off the net, If im leave it will it still flower ok it's currently in its second day off 12/12.
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To start with do a bit of your own research to confirm what I said. You can just start a search with something like "brown spots on lower leaves" and some of the first results will be some pretty solid troubleshooting guides for cannabis plants.

As far as what you're looking at it is most likely a cal/mag deficiency which will definitely effect your total yield and final quality. It's actually the most common deficiency and you'll find that where most are fine there are a few that can sometimes need twice as much cal-mag as most.
 
Bernie420

Bernie420

Well-Known Member
not cal mag looks phosphorous to me I would just pick off the two bad leaves you have and just keep an eye on it
 
Smithy1

Smithy1

Well-Known Member
Bernie420 said:
not cal mag looks phosphorous to me I would just pick off the two bad leaves you have and just keep an eye on it
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Top stuff cheers bud, They are in my flower room at the minute so u can't disturb them I'll do it at 12oclock today U.K time when they are due 12 hour light, They are only on A+B canna, is it possible I could need some extra nutes?
 
Bernie420

Bernie420

Well-Known Member
Smithy1 said:
Top stuff cheers bud, They are in my flower room at the minute so u can't disturb them I'll do it at 12oclock today U.K time when they are due 12 hour light, They are only on A+B canna, is it possible I could need some extra nutes?
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you can sneek in there ninja style
 
SchmoeJoe

SchmoeJoe

Well-Known Member
Bernie420 said:
not cal mag looks phosphorous to me I would just pick off the two bad leaves you have and just keep an eye on it
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Whatever it is not doing anything about what is obviously a deficiency or possibly a toxicity problem is terrible advice.

There's two things to do;

1) identify the problem and best course of action to correct it;

2) correct it
 
Bernie420

Bernie420

Well-Known Member
Smithy1 said:
Top stuff cheers bud, They are in my flower room at the minute so u can't disturb them I'll do it at 12oclock today U.K time when they are due 12 hour light, They are only on A+B canna, is it possible I could need some extra nutes?
Click to expand...
well yeah.. cal mag, and just epsom salts for later in flower. a pk boost for mid flower order that online its way cheaper than moab at a hydro store. I like some humic acid for the micro's, kelp for the roots in veg. microbes got to have some microbes no doubt.
 
Smithy1

Smithy1

Well-Known Member
SchmoeJoe said:
Whatever it is not doing anything about what is obviously a deficiency or possibly a toxicity problem is terrible advice.

There's two things to do;

1) identify the problem and best course of action to correct it;

2) correct it
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So what you folks think I should do about it pick the leaves off that are discoulered? Or buy some Calmag and treat it? There is 2 fan leaves that are suffering with it and there is a few little leaves that have a spot or 2 on them.
 
Bernie420

Bernie420

Well-Known Member
SchmoeJoe said:
Whatever it is not doing anything about what is obviously a deficiency or possibly a toxicity problem is terrible advice.

There's two things to do;

1) identify the problem and best course of action to correct it;

2) correct it
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He has two bad leaves from a past problem no need to try and correct something that isnt there now. Canna is top shelf nutes and his plant looks bitchin other than a couple of bad leaves. pick them off leave it alone. Rock on.
 
Bernie420

Bernie420

Well-Known Member
Smithy1 said:
So what you folks think I should do about it pick the leaves off that are discoulered? Or buy some Calmag and treat it? There is 2 fan leaves that are suffering with it and there is a few little leaves that have a spot or 2 on them.
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:wall::wall::wall:
 
Bernie420

Bernie420

Well-Known Member
SchmoeJoe said:
Whatever it is not doing anything about what is obviously a deficiency or possibly a toxicity problem is terrible advice.

There's two things to do;

1) identify the problem and best course of action to correct it;

2) correct it
Click to expand...
I stand corrected he should get some microbes in his soil. Problem solved.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
Bernie420 said:
He has two bad leaves from a past problem no need to try and correct something that isnt there now. Canna is top shelf nutes and his plant looks bitchin other than a couple of bad leaves. pick them off leave it alone. Rock on.
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Where did the op describe any past issues?
 
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