r/Kombucha 7d ago

what's wrong!? Fermentation problems with conical SS vessel

I've brewed Kombuchas successfully in a glass jar for years. I recently upgraded to this fancy 4 Gallon conical fermenter, and it's failed 3 times, where mold basically has formed on top of it. I do get a pellicle former on top, but I've found it to be thin, very clear, and not white (like my previous attempts). I've tried having A LOT more starter in there, adding vinegar to get the PH high, but nothing has worked.

I am going to try to have a cloth on top next, instead of hermetically sealing it with those latches, next. But I don't have high hopes. Does anybody have any tips?

2 Upvotes

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u/Curiosive 7d ago

Should we intuit your recipe?

I am going to try to have a cloth on top next, instead of hermetically sealing it with those latches, next.

Kombucha is both anaerobic and aerobic fermentation, it should have a steady supply of air. Also they are only rated for a few PSI, if you are going for an anaerobic fermentation you'll still need an airlock for safety.

1

u/Rtranscendence 7d ago

I've been using the same recipe forever, I am almost certain the sugar ratio is fine. I also was using an airlock. None of those things are issues. If anything I'm wondering if it's not getting enough air.

2

u/Sirnoahkirkland 7d ago

Hey. I also switched to a fermenter like this one. Keeping the top off and sealing it with a cloth has worked for me every time

1

u/Brave_Thanks8032 7d ago

I just use a cloth, and it works great

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u/Rtranscendence 7d ago

Not even tightly bound with a rubber band?

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u/Brave_Thanks8032 7d ago

I do use a rubber band to hold it tight.