I've been having a lot of problems past year or so with my beers turning sour (also crazy over-carbonating so I'm thinking some sort of wild yeast contamination). After several batches got ruined, I decided to throw away my plastic buckets and bought glass carboy and new tubes and everything else that can touch beer after boiling-phase to make sure it would not happen again. I made my first batch over a week ago (basic cascade-apa, US-05, OG 1.053) and put it in a cellar. It was a bit too cold in there (15C which is about 59F i think) but it was fermenting the next day. I brought the carboy inside the house today to make sure it would ferment completely - bubbling is still going. I don't know if I'm being paranoid because of my past dissapointments, but I got worried does the beer look infected - AGAIN? Does beer in the pics look normal to you? Should i be worried about bretta or something? If I still have the problem I am out of ideas what is going wrong with my process. Naturally I clean equipment before brewing and sanitize with saniclean. The beer has not siphoned to secondary, opened or anything. As mentioned, I used plastic buckets before so I rarely opened the buckets to see how heatlhy fermentation should look like. But I am a lil bit worried about those "big bubbles"