@Stinkfist - Man, I only got like 5 (10 gal) batches out of the Home Depot canister aerating for 45 seconds per carboy. My experience plus what Jamil said on one of the recent Brew Strong shows convinced me to go get a bigger tank.
@maxwell - I pasturize it in the HLT while I'm heating the sparge water. After that I drop it in the bucket of sanitizer. Every other batch I will boil it.
do you run it wide open for 45 seconds? lol def should get more than 5 batches...you want it to come out of the stone but not really break the surface of the wort when you are adding it otherwise you are wasting oxygen at it will just come straight out of solution..I easily get 40 5 gallon batches out of the 2.12 or whatever ounce tank from home depot..