Demosthine is right, I do lacto fermentation, I got the two types mixed up. I don't add vinegar or anything else to my batch, I set the lid on the top of the bucket loosely, and I use water straight from the hose (in tucson). After I feed in the mornings, I add more dry grains and water, and stir. Then it's ready to go next time I feed. I do have the film that demosthine described.
Several things to note... First, you don't need to add anything to get a good fermentation going. There are natural yeasts in the air that will start that process very shortly. Alcohol fermentation is not going to occur because it is an anaerobic fermentation, meaning without air. In alcohol fermentation, the yeast offgases CO2, which is heavier than the natural air. It will force the oxygen out of the bucket, creating a layer of CO2 that will essentially seal the bucket. Thus, the reason you want to stir it every day. This adds oxygen in to the mixture and ensures proper lacto-fermentation, which is what we want to achieve.