Leave spots oh my what could be wrong

[higherandhigher]

I noticed a few leaves like this today

 

[amneziaHaze]

How to fix Cannabis Calcium Deficiency (Ca) Pics & Symptoms

Calcium deficiencies cause tiny brown spots that appear on new and middle growth. Learn how to fix this problem for good!

www.growweedeasy.com

does it look like this?

 

[ArtfulCodger]

Seeing the edge curl, spots, and interveinal yellowing, my guess is that your light level is outrunning the Ca and Mg available to the plant.

 

[carlosescobar]

ive just had a similar thing , coco holds onto a lot of calcium , 2 feedings with cal mag and it stopped.

 

[higherandhigher]

Seeing the edge curl, spots, and interveinal yellowing, my guess is that your light level is outrunning the Ca and Mg available to the plant.

The grow store guy sold me this..2ml in a gallon just not sure how long to use it..from now on or just once

 

[ArtfulCodger]

The grow store guy sold me this..2ml in a gallon just not sure how long to use it..from now on or just once

Depends on media and feed style, but in soil, I add calmag to every non-feed watering from the third week of seedling through the third week of flower. I start at 50 ppms, and ramp up if I see symptoms on new growth.