So I played with natural yeasts and cultivation. Had few strains isolated and kept in fridge. But recently one extremely resistant strain contaminated all of it.
Had some good brews, some bad, some meh. So what is yours experience, did you tryed it or want to?
https://www.youtube.com/watch?v=WtXrsvNLCxk&list=PLZ3Z2428mCTqDFK-3ZSNpZBXJfTaMtRXE
I used this as my reference (I have lots of lab experience). Generally you need about 25°C for yeasts and fungi but 20 is enough. I use the insulated cold box with heat pad and thermostat. Dehydrator is overkill if you want to try it, some place with constant temperature is enough.