Originally Posted by bcryan
2 table spoons for a 5 gallon carboy?? wow. i've been using way too much. good to know
Actually, a 6.5 gallon carboy. And yes, just the two tablespoons dumped in, then fill to the rim with hot tap water. It's actually amazingly effective stuff - damned near witchcraft - when you see it in action.
The white film mentioned is probably precipitated carbonates, which will vary depending on the water supply as well as how cold the solution becomes over time. I've never had to let a carboy soak more than a couple of hours so the Oxy stays pretty warm which probably keeps stuff from falling out of solution...