"Doug Miller" > wrote in message
...
> On 10/19/2011 11:01 AM, Tycarnell wrote:
>> What is recommended to put in an air-lock other than filtered water?
>> Crushed Campden tablet? or something else?
>>
> General-purpose sanitizing solution made up from 2 ounces potassium
> metabisulfite dissolved in 1 gallon of water.
>

or vodka or even better glycerin, it doesn't evaporate