what deficiency?

[BakingcoOkiez]

What the heck is this?

 

[Bose]

How far along are they in flower?

 

[green217]

Magnesium?
Check this link and do some more online, lots of it out there. Thsi was closest thing I could find to your pic though. Do you run any CalMg? do u run RO water?
Link: https://www.icmag.com/ic/showthread.php?t=231387

Gets some CalMg on there asap. I use Calimajic by GH. It has some iron in it also. that is what I would do. Maybe with some better experience in this can chime in.

 

[Cobnobuler]

Is it only around the tops ? If so it could be a moderate light scorching.

 

[Ghettogrower187]

Yeh that's not light burn man get some calmag or Epsom salts in there and check run off ph maybe up feed a little too?

 

[BakingcoOkiez]

How far along are they in flower?

Just started my 5th week.

 

[BakingcoOkiez]

Yeh that's not light burn man get some calmag or Epsom salts in there and check run off ph maybe up feed a little too?

I'm running dwc.

 

[BakingcoOkiez]

Is it only around the tops ? If so it could be a moderate light scorching.

Yea just on a few tops. None of the lower and bigger leaves have it. Don't deficiencies start with the lower growth and work it's way up?

 

[Ghettogrower187]

I'm running dwc.

Im out then lol...simple minded coco grower here