Slight Yellowing + Brown Spotting - Help

[arcatagreenhouse]

Dear THCFarmer forums,

Grow info:
- Medium: Compost + potting soil
- Nutes: Beneficial Living Center Veg grow every other feeding, 1/2 tsp epsom salts every other feeding, compost tea every other feeding
- Water PH: 6.2-6.6
- Outdoor/Greenhouse environment

I have been noticing these brown spots and slightly yellowing leaves on one of my plants. The Brown spots are slowly appearing on almost all of my plants in a small amount. Any ideas what this could be? Started appearing very slightly 1-2 weeks ago.

Thank you so much and let me know if I can provide any more info that would be helpful!

 

[Jack og]

Any oil based spray? In the past week?
It’s a sign of dying fungal infection, I see that after pm treatment .
also seen that if the plants weren’t hardened off, came from inside and went to full sun, older leaves will “light burn” new growth will look fine. Pls lemme know what you think. But I don’t see a need for panic

 

[Dr.Pepper]

i think it looks like nutrient burn, not too bad though, but i would put money down on the fact that the plants shown DO NOT look underfed