Brown spots unhealthy looking.

Any one got an idea what this is? I’m using living soil and my older plants in the flower room never got this but the new ones have? It’s shouldn’t be a deficiency as it has all the food in the soil. Temps and humidity have been normal

has anyone deliberately or accidentally poured/spilled anything on it? It appears to be on the plant behind it also. Did you check for bugs?

ALPHA.GanjaGuy said:

has anyone deliberately or accidentally poured/spilled anything on it? It appears to be on the plant behind it also. Did you check for bugs?

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I have an ongoing thrip problem that I treat with spray and Predators. But had them a while and they don’t do that to it. And when I water with a watering can and rose sometimes water would go on the leaves but it’s only plain water, bit of water on the leaves during veg I thought would be better if anything raise the humidity a for a bit ?