We use ordinary tap water. Water supplied by the Water Board contains chlorine which can sometimes hinder the start of fermentation. If such is the case the water can be filtered through a half decilitre of activated carbon. It can also be allowed to stand in the fermenter for a day prior to using starting the fermentation. Stirring with a large mixing paddle or oxygenating with a aquarium bubbler will also reduce chlorine content. We run the water from a tap with an aerator or from a shower head to oxygenate the water.
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