If possible...need help!

[jimjay]

I got a pic.....
The plants i am having issues w/ were planted a week ago in coco. They are in 6'' pots in veg. watered 4 times a day. ph is 5.9 and after recirc. a few days it goes to 6.5. The plants look like they have a mag. def. but they are only a week old. It started from the bottom, leaves looked like they had light burn but it wasn't a bleached color it was more dark brown. The leaf tips curl up. It started mid to bottom and is now moving up the plant very rapidly. The leaves have also been yellowing in a mag def. way but at the top of the plant

I use canna coco nutes and add sweet and cannazyme/hygro at 1.0 e.c.
The canopy temp is 72 f and night time is upper 50's low 60's.The lights are 24'' away

I guess my ? is do you think it could be mag def or something else?
It looks like mag to me but it has spread so fast and they are so young i don't see how it could be mag.

 

[orgogliodiprovi]

hmm

hmm

First... Im no plant doc but maybe you over fertilized? That what it sounds like to me....

 

[jimjay]

It is def possible. The main reason i think it is mag is because the tips are curling up. Also the plants aren't real dark, they are getting light colored.

 

[MTF-Sandman]

How big are the plants? Kinda sounds like overwatering and nute burn...

 

[jimjay]

6''. Possibly nute burn just because i didn't buffer the coco. I have never had high ec readings from bcuzz coco but this time i was. I caught it pretty quick though.
Hopefully it is just nute burn but i dont think it is. Or at least i have not had burn look like this. And the watering sched. is good for coco.

 

[MTF-Sandman]

Yeah, I run coco too...smaller plants can be overwatered in it if the root systems aren't developed very well. Once they get established, it's almost impossible to overwater em tho. If they're getting nute burn, then odds are that the root system isn't exactly ideal, so that could be compounding things.

What do you "buffer" your coco with? I've never added anything to mine before using it the first time.

 

[jimjay]

Thanks Sandman- I meant flush. Yeah the roots are just getting established. You think that is nute burn? The e.c. are comin out a little lower then i am feeding them.

 

[Guest]

Bottom or top leaves?

Taken from OG grow faq

Magnesium deficiency will exhibit a yellowing (which may turn brown) and interveinal chlorosis beginning in the older leaves. The older leaves will be the first to develop interveinal chlorosis. Starting at leaf margin or tip and progressing inward between the veins.

This can be quickly resolved by watering with 1 tablespoon Epsom salts/gallon of water.



I was just giving you a description of MG def to clear up confusion. In my opinion I would just assume that was caused by overfeeding.

 

[jimjay]

That looks alot like my plant. It started in the middle and is spreading to the top. Every time i go in there a diff. leaf is looking like that.

 

[jimjay]

Well i did lower the e.c. a little too .8. This seems really low. They have been growing though and roots are starting to show throught the bottom.
The pic i took at the top, That leaf and many others have gotten much worse looking. The burn spots got darker and darker and curled up.

Any more ideas are appreciated.

 

[Playaction]

slow the watering or cut the coco with something like perlite.
add a cal/mag supplement, coco demands it
be easy on the nutes until your plants get established... less is more
keep your ph around 6