open fermenter for TC?

[newtonsshed]

Looking at getting into TC as I haven't got any demijohns or water bottles I'm tempted to use those plastic 15l water containers used for camping that I have "laying around" the only problem is the bung is too small to fit the neck so could I ferment without airlock - I usually primary ferment beer this way befor racking in secondary without issue planning to ferment in the kitchen or would I need to stop airborne bacteria getting in from what I've seen read on fermenting TC there's so much trying to get out that I doubt anything be getting in!

\\\\\\\\also I have some wine tenning shell I use this instead of tea and if so how much?

Thanks

[Wolfy]

You don't need an airlock to prevent airborne bacteria or wild yeast getting into your brew (any brew, beer, TC or otherwise).
Simply cover the container-entrance with something like cling-wrap or a cotton tea-towel and hold it in place with an elastic-band, that will prevent any nasties getting in but still allow the C02 to escape.

Beer fermented under a tea-towel was very common 20-30 years ago, and I never use an airlock now, just cling-wrap on everything I brew.

[Curious Brew]

Put a pin hole in a balloon and stretch it over the neck.