Is this a calcium or magnesium deficiency?

Josh MacGruber

Member

• Apr 13, 2016

• #1

6 upper leaves on one of my plants has these dots on them.
Week 3 flowering
600hps coco coir flora trio
Should I just give it some extra calmag on the next watering?

 

Orlando737

Well-Known Member

• Apr 13, 2016

• #2

Josh MacGruber said:

View attachment 3656532 View attachment 3656534 View attachment 3656532 View attachment 3656534 6 upper leaves on one of my plants has these dots on them.
Week 3 flowering
600hps coco coir flora trio
Should I just give it some extra calmag on the next watering?

Click to expand...

I'd say calcium, judging by that pic & this.
http://www.growweedeasy.com/calcium-deficiency-cannabis

 

polishpollack

Well-Known Member

• Apr 13, 2016

• #3

magnesium most likely. if that spotting started off as a golden yellow color, it's magnesium.

 

StreetsofRage

Active Member

• Apr 14, 2016

• #4

I would say this is a late stage potassium def.. reason being calcium or magnesium tends to rust the leaves when showing deficiencies if you personally think its a calcium/magnesium def then magne-cal will sort the job otherwise a pk boost will sort your issues out

 

Josh MacGruber

Member

• Apr 15, 2016

• #5

Thanks everyone