The accidental Lambic
 

Racked myCoal Porter and SimpAle Pale to kegs today while brewing two new batches. The porter came out so clean and tasty! The pale ale was SOUR!:(

Haven't had issues with infections so far, but this was some SERIOUS SourPus!

Only thing I could think of was that I had not removed and cleaned the soft O-ring in the lid of my Coopers fermenter. Also changed the spigot, but I do that every batch and clean the alternate spigot between brews.

Have a new batch in the fermentor now. If it goes bad, then I buy and new primary and pitch the Coopers.

Anyone else had a batch go seriously sour?

Yes - a hazard of summer brewing in Florida. My brew partners (big Lambic fans) loved it, so I donated my share. Dubbed it "FLambic" and stuck to winter brewing.