Spots all over leaves during bloom

[budrow]

Hi, I am growing a blackberry kush auto from Dutch passion. I am currently 2-3 weeks into bloom and I'm noticing the leaves are getting brown spots all over them and changing some color. I water when it's dry every other watering I add 12ml of Clyde autoflower nutrients from cronk nutrients and about 4ml of cal mag. They have been in Foxfarm Ocean forest soil in a 3 gallon fabric pot. Light is a 1000watt full spectrum mars hydro. Thanks!

 

[JIMKSI64]

Kinda looks like

https://www.google.com/search?q=cannabis+septoria&oq=cannabis+sep&gs_lcrp=EgZjaHJvbWUqBggBEEUYOzIGCAAQRRg5MgYIARBFGDvSAQg1ODY5ajBqN6gCD7ACAQ&client=ms-android-charter-us-rvc3&sourceid=chrome-mobile&ie=UTF-8

 

[RhastaBlasta]

Those spots could be a few things — common culprits during bloom are calcium deficiency, pH issues, or early signs of pests like spider mites. I’d start by double-checking your pH range to make sure nutrients are getting absorbed properly. Also take a close look at the undersides of the leaves just to rule out any bugs. Catching it early is key, and your plants still look like they’ve got a lot of potential. You're on the right track digging into it now.

 

[JIMKSI64]

Cal-mag def hits new growth first. A fungus will be a blotchy situation where a square foot of the plant is pretty heavy but other parts are clear or minor. Cal-mag spread like acid rain all over slow when it's high lights being pushed and fast when it is a lockout situation. Fungus is a zombie appocolapse other parts of the plant have to be infected. Look for the newest leaf that has it and take a really good picture that can be expanded to zoom in. Let's look at some vein structure and colors.
And as other poster said, rule out PH and pests.
Recently a poster put up a sticky trap pic. Looked like 2 gnants. Zoomed in and there were 50 freaking bugs on that trap LOL . I have changed my IPM and zoom pics now for sure.

 

[capone304]

This is spider mites fasho

 

[LoveGrowingIt]

The first picture is the only one I can see well enough to make a guess. The small dots look like spider mite damage. The bigger orange and brown patches look like calcium deficiency. They're both advanced on that leaf. If it's spider mites, it would be best to treat them ASAP, while the buds are still early. I don't recall what the growth medium is, so I can't say how to treat calcium deficiency.