Daily check in on my stout, seems to have gotten a bit excited in the night.
E1: Changed out the airlock, sanitized, the whole shebang. Came back 5 minutes later, it happened again lmao. Swapped in another clean airlock, this time with some vodka in it to see if that helps.
E2: Swapped out the airlock again, this time with more vodka, hope that helps keep the bubbles down. This is so exciting!
E3: I've been checking back every hour or so, it's blown over again at least once. I guess I should be happy that my beer is fermenting so actively lol. Looks like I'm gonna be swapping out the airlock every few hours today, until main ferment dies down.
I mean there's so much froth and gas coming out at any one time that the odds of hostile microbes managing to colonize the wort is very low, just because it can't even get in. Add in the vicious population difference, and it's no contest.
I think the risk is low as long as you are doing a relatively quick ferment. I wouldn't let it sit in secondary for months or anything.
Yeah, you could primary ferment in an open container and the risk would be very small.
Yeah, open tub fermatation is safe. The yeast out competes everything else in the tub, not really giving any other microbes any chance to form a colony.