Forgot to open collection ball on fast fermenter

[Eric_83]

I am fairly new to brewing, im just starting my 3rd batch. I brewed yesterday and after putting wort and yeast into my fast fermenter i forgot to open the valve to the collection ball. When i opened the ball, all of the sediment was packed and wouldnt go into the ball. Fermentation had already started. I tapped on the side of it pretty hard and some of it broke free which then introduced all the air from the ball into the brew. The airlock went crazy, as all the co2/oxygen escaped.

Will it hurt the beer to introduce that much oxygen into the brew at this stage?

 

[mongoose33]

Not as long as it's still fermenting. Yeast will consume the oxygen, and some of it will be blown out of the airlock.