our first few grows we had no clue what it was until it was to late and it spread.
The weak link of our grows was always environment. What ever it was in the basement was what it was in the grow room.
Humidity, heat, cold, just like outdoors what it is is what it is.
Plus it was actually in a bathroom shower stall, maybe some funky spores lingering around or creeping up from the drain,,,ewwww.
Some of the real fat single cola plants (fatter than a pringles can) had it so deep we didn't even see it until we were manicuring.
We noticed where ever we saw that beige spot, we'd to start checking the plants.
After a while, we knew starting week 7 to pull the plants out and inspect real good. That's when it was usually the first signs of the beige spot. Catching it early enough to only loose a bud or two.
And I learned rather than grabbing a bud with my hand and spreading a bud open to inspect, to just grab a leaf and pull it a little to spread the bud, Less finger contact to spread spores.
a little hard to see in the pic, but when you see it in person, you'll know what I mean