Aeration---getting pure oxygen

[dartedplus]

I was thinking of getting a SS aeration stone, and dont want to mess around with aerating with a pump for 30-40 minutes and making a ton of foam, so where can I buy/get some oxygen????

[slothrob]

You can get small oxygen tanks, used for portable welding kits, at most well-stocked hardware stores. You'll also need an adapter like this to fit the threads.