[quote=“roffenburger”]I need to start reading posts slower.
You are right. Better bottles are impermeable. Buckets are not. In the case of better bottle vs glass, it doesn’t matter. I only have glass, so that’s my preference because I already have them.[/quote]
All plastics are permeable to some degree. Sure, you may not want to age a beer in a bucket for years, but for most cases, buckets, better bottles, etc… they will work just fine. Plenty of home brewers use plastic to ferment and even age for certain amounts of time. I agree that glass is probably the best option for long aging though.
In reality, the amount of oxygen that can work its way through a plastic bucket or better bottle is miniscule compared to how much oxygen is introduced when popping the lid/top to take a gravity reading.
People make WAY to big of a deal out of the permeability of certain plastics when talking about home brewing.