Top of airlock

[Hedley]

I have just realised that the red cap has been missing off the top of the airlock on my demijohn for a week (I transferred from primary fermentation bucket to demijohn last week).

How important is this bit of the airlock? I've put it back on now.

Kind regards,

Ross

 

[johnnync]

It keeps the big stuff out. I wouldn't worry about it.