I have a feeling its because my RH is too high. I just bought a better dehu. My rh is around 75% lights off. 63% lights on.
I'm thinking about putting peroxide on the stems and then the new dehu will lower the RH.
I don't know what else to do.
I also read the stems do this sometimes if you have root rot. I dont think I have root rot. Im in fabric pots. And I don't overwater.
Whats weird is... why is my foliage perfectly fine but the stems look like an old crippled fuck lol