does airlock need water
Hi Michelle! The water in an airlock serves as the barrier between your wine and the outside world. An airlock without water in it doesnât provide any protection. During fermentation the pressure inside your fermenter will build up until the carbon dioxide is pushed through the water and escapes.he wine is fermenting away but this morning the airlock had overflowed wine in it. I wasnt sure what to do so i topped the airlock up with clean water. Should i have disconnected it, cleaned and filled it back up again.