[castlebrew]

“What is a water seal?”

A device (aka “water lock”) that allows the CO2 developed in fermenting to escape, while keeping fresh air (and its contents) out of a closed fermenter.

Also a device subject to clogging when the fermentation is very active (and the foam plugs the water seal). This condition often leads to a very messy result when the seal blows (literally) off the fermenter.

[Red_Devil 232]

Thanks! Ah now I understand. Like a cap on the jug with a hose connected and the other end is submerged in a container of water!

[mylife]

We used to just put a balloon on the neck of the bottle