Originally Posted by mkub
I never even thought about the so2 gas. I din't think the wild yeast could be taking off that fast. Thanks I wish had this site to help me a few years ago. I appreciate everything. The only reason I put the air lock on was because I've been doing tomatoes and pears and there a few fruit flies around.
Ah, that makes sense! I use a clean bath towel over the top of my primary, secured with a big rubber band to keep out fruitflies, but I don't have very many- it's too cold now for them here!
I'm not sure exactly WHAT it is you've got going on there, but I'm thinking that the temperature change (warming to room temperature) and the so2 is the best guess.