First blown top on fermenter.

Well...Had my first blown lid on the fermenter. Nice healthy amber blew it's top and Christened the inside of my fermentation chamber. The problem is I had not checked on it for a day or two. So I have no idea how long it had been there with it's lid half blown off. I could see the krausen on top of the beer when I lifted the lid off the chamber. I have a fan blowing around the cold air on the inside of the chamber so I'm hoping nothing got in there. The airlock was completely filled with yeast.

I guess I'll find out in a week or two if it will go sour or not.

Should be alright....there will be plenty of CO2 blowing outward and not letting O2 in....I always start with a blow off tube.