Spots on leaves forming 5 weeks

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About 5 weeks old. Started on lower sets of leaves and stayed there which made me think it was stress from heat perhaps which I now have under control. but today checked and its now working its way up. Need help identifying it please. Temps are at 75 and humidity at 72% in happy frog soil/perilite mix. Ph is at 6.5

 

[thedubside]

id add some cal mag

 

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id add some cal mag

I'll do a soil test tomorrow morning and add cal mag next watering and keep you posted.

 

[chemistry]

Stick up a pic of the whole plant. Have you checked for mites?

 

[Icon99]

Stick up a pic of the whole plant. Have you checked for mites?

No mites visible

 

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Sadly my local farm supply store has no test kits available atm.

 

[BroScience101]

Peat looks bone dry which is prob locking out your calcium. You have to keep the peat/root zone always hydrated so nutrient exchanges can take place

 

[Icon99]

Peat looks bone dry which is prob locking out your calcium. You have to keep the peat/root zone always hydrated so nutrient exchanges can take place

Thanks.

Now i have this issue. In flowering. 5 weeks in. I waited to long to switch and it got taller then I was hoping. Whatever this strain is its definitely more picky then my first I grew without issue