Yellow leaf spots

[Pendejito]

Hello

I am trying to determinate what problems my plants have.

See photos here underneath. I grow in hempy buckets, Coco mixed with Perlite and I heard its more difficult to get Mites in this also the yellow spots dont start in the buttom more in upper parts of the plant but not the top.I have looked for Mites or any kind of small animal but I dont have a glass or anything like that to make it easier so I cant really see. I have three plants in a small tent but only one is showing this dots.

I feed them with the H3ad formula and add some calmag once every week.

Anyone know what this could be?

 

[CannaCountry]

Looks like a Ca deficiency to me.

 

[lime73]

What's ph?
With Coco you'll need to add cal/mag everytime you water/feed.

 

[Pendejito]

Thanks so much for your input! I actually tought it was not calmag but either Mites or Leaf Septoria.

Adding water PH i keep between 5.8 - 6.0 and I also tested the run off and it was around 5.6 so a bit lower then when I add it.

I will start adding cal-mag with every feeding then and see if this is the problem. I have three plants, two Northern lights auto and one AK auto. They have all been feed the same way but only one of the NL show this sympthoms.

 

[teddy bonkers]

Thanks so much for your input! I actually tought it was not calmag but either Mites or Leaf Septoria.

Adding water PH i keep between 5.8 - 6.0 and I also tested the run off and it was around 5.6 so a bit lower then when I add it.

I will start adding cal-mag with every feeding then and see if this is the problem. I have three plants, two Northern lights auto and one AK auto. They have all been feed the same way but only one of the NL show this sympthoms.

not either of those

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

 

[Pendejito]

not either of those

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

Thanks alot, I have just flushed all my plants with h3ad formula + calmag with water ph 6.2 and will keep putting in calmag with every feeding so hopefully new leaves will look more healthy. I think this might also be the reason to why one of the other plants looks almost yellow at some bigger leaves and a bit lighter green in general (I am colorblind so not super easy for me to derminate)