What causes this?

End of week 3 veg. have had this discoluration of the leaf for a while now, kinda got better when i upped from 2/3 to allmost full strength with canna reccomended light feeding schedule + calmag. but now its starting to show again. i also have some plants in week 5 veg and those are not showing anny symptoms, and are getting same strength nutes as theese. what can i do?.20201014_084344.jpg20201014_084418.jpg
 

Aussieaceae

Well-Known Member
Week 3 veg?

I'd give an application of neem as a precaution, if you hadn't already.

Probably better to do it when the lights are off. And not moments before they turn on.
 

Aussieaceae

Well-Known Member
Also how is the humidity in the room? Those white tips look as though it could be the start of mildew. But it really could be anything.

Edit: if it is, then neem should help there too. A little IPM in veg is always a good thing anyway.
 
Also how is the humidity in the room? Those white tips look as though it could be the start of mildew. But it really could be anything.

Edit: if it is, then neem should help there too. A little IPM in veg is always a good thing anyway.
51% humidity, its not mildew i think since i cant vipe it off. its like the leaf showing a symptom.
 
Are you feeding to run off and have you tested the ec of the run off?
i had them in solo cups, but then replanted them over in bigger pots, so gave the first watering with runoff yesterday since transplant. i wanted to roots to establish a little, before giving them that much water.
 

Star Dog

Well-Known Member
i had them in solo cups, but then replanted them over in bigger pots, so gave the first watering with runoff yesterday since transplant. i wanted to roots to establish a little, before giving them that much water.
How long have they been in they pots?
 
How long have they been in they pots?
maby 1.5-2 weeks, but this symptom have been showing since transplant(actually reson for me transplanting). and disapeard when upping the nutes as recomended by another member in here. but now seem to have come back. its only showing on one strain(multiple plants), but other strains dont show symptoms after i upped nutes. also older plants dont show symptoms either and they are getting same strength nutes.
 
another member on this forum said that i should up the nutes + start giving calmag. i did and it fixed the problem, but now they are starting to show symptoms again.
 

Star Dog

Well-Known Member
End of week 3 veg. have had this discoluration of the leaf for a while now, kinda got better when i upped from 2/3 to allmost full strength with canna reccomended light feeding schedule + calmag. but now its starting to show again. i also have some plants in week 5 veg and those are not showing anny symptoms, and are getting same strength nutes as theese. what can i do?.View attachment 4713540View attachment 4713541
The size of the plant tells me it should be getting fed every day till run off, imo your only holding it back and creating problems by not feeding until run off.
 
The size of the plant tells me it should be getting fed every day till run off, imo your only holding it back and creating problems by not feeding until run off.
yea started giving them feeding til runoff yesterday, so will continue with that from now on
 

Aussieaceae

Well-Known Member
Have you tried a touch Epsom salt?

If it's any indication of a lockout or deficiency, I'd be going with magnesium.

I still think a good bug preventative would be a safe precaution as well. Bugs will often choose the most vulnerable hosts. Usually the youngest plants, or the sick.



Yeah that looks really suspect imvho.

All the best and good luck. Hope you find what's going on.
yee, will just feed water next feed aswell, and it will probably sort itself out. just wierd since only one strain showing this, others are fine... ive given calmag 1/2 strenght, last 2 times i feed nutes. i give nutes every second feed.
 
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