Airlock lid blowing off

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Matthew Barker

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I'm making a cider from the apples harvested from my allotment and for some reason, instead of bubbling through the water in the airlock, the pressure is just building up until the lid blows off.

I'm pretty sure the fermentation is going fine, otherwise it wouldn't be happening. I've tried two different airlocks, which have worked fine in the past.

Any ideas why this might be happening?
 

Jag75

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Blow off tube is what you probably need . I'm assuming you have little to no headspace.
 
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Matthew Barker

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Yeah, it's pretty full. I thought a full 10l bucket would be better than a half full 20l.

Think it's safe to mess about with the airlock now or would it risk infection?
 

Jag75

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Yeah, it's pretty full. I thought a full 10l bucket would be better than a half full 20l.

Think it's safe to mess about with the airlock now or would it risk infection?
I would set up a blow off tube . Just sanitize a piece of hose and run from the lid into a jar of Star San . Like this 20190531_135223.jpg
 

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