Yooo ! Can anyone help , mid way through week 5 and I noticed this happened over night , anyone know what might be causing this .

[Mañ'O'Green]

I have been giving all 6 plants the same though and that’s the only one that looks like it’s struggling

Damage is done days or weeks before you see it!

 

[Aaronunknown8]

Ok buddy ! Will begin flushing ! Fingers crossed

 

[Feenix]

View attachment 1311472
I am using coco, 2 gal pots, using canna a+ b 15ml per 2gal and 5/10ml calmag ,

What kind of lights? LEDs often require a little more cal/mag than published dosage and COBs a tad more than that.
Its a good time to familiarize yourself with the infirmary so if you get a serious problem, you know what to do. Some great folks to know.

 

[Aaronunknown8]

I am using 480w led which is on at the moment which I will be changing to 600w ups+ during flowering . Yeah this is my first attempt if I’m honest and didn’t really know where to go for advice . But glad I came here

 

[Mañ'O'Green]

What kind of lights? LEDs often require a little more cal/mag than published dosage and COBs a tad more than that.
Its a good time to familiarize yourself with the infirmary so if you get a serious problem, you know what to do. Some great folks to know.

Just an FYI @Feenix This is not because of the type of light directly but more related to the fact that the plants grow faster under the better "quality" of the light that LEDs provide. So the statement is somewhat true but if other factors in the environment are slowing growth then extra Cal-Mag is not indicated. Most cannabis oriented nutrient lines are providing plenty of Cal-mag in the base nutes.

 

[THE BEAR]

Don't snip the leaves away. They are your way of telling if things are getting better or worse, if your not sure what's causing it

 

[Bill.de.Cat]

OMG that is WAY to much Cal-Mag.

This is a feed chart from Canna Coco for 2 gallons, Most autoflowering plants will be happy at 50% - 60% strenght of this chart. No where do you see to add any Cal-Mag at all?

View attachment 1311494

Very seldom do I recommend a full flush but you are headed for disaster if you do not get that Cal-Mag out of the pot!

Cal-mag strikes again.

 

[Aaronunknown8]

Don't snip the leaves away. They are your way of telling if things are getting better or worse, if your not sure what's causing it

 

[Aaronunknown8]

The guy that sold it to me with the coco said to use it every watering and from the information I got on the web I assumed it wouldn’t do any harm

 

[Feenix]

Just an FYI @Feenix This is not because of the type of light directly but more related to the fact that the plants grow faster under the better "quality" of the light that LEDs provide. So the statement is somewhat true but if other factors in the environment are slowing growth then extra Cal-Mag is not indicated. Most cannabis oriented nutrient lines are providing plenty of Cal-mag in the base nutes.

I hadn't seen page one. Wasn't contradicting you on purpose. Just hadn't seen your posts.