Maybe this should go in the general topic category, but it has to do with oxygenating my wort prior to pitching my yeast.
I have recently switched from aerating with an aquarium pump to pure O2. I use a bottle of oxygen that I get from the local hardware store without any kind of flow meter (just the canister, a regulator, a tube, a filter, and an aeration stone).
About how long should I let the oxygen flow, and should it be a fast flow, or one that produces smallish bubbles from the stone? I simply don't want to overdo it.