Why not simply add some agar, like maybe 0.5 - 0.7%? SWM
Martin Weiss wrote:
>> Has anyone experience setting up Winogradsky colums using only
> water? Can you get a stratified column of anerobic bacteria grwoing in a
> column of water in the same way that you can with a column of mud? I am
> trying by building a small classical column, about 25% of the total
> volume of the column, (using mud mixed with egg or wood chips or paper)
> and the rest of the column water collected with the mud. So far, about a
> week no luck.
>> I am hoping the colonies would be more visible and perhaps we could
> sample more easily, using a thin plastic tube, used to cover fluorescent
> light bulbs.
>> Any ideas or suggestions?
>> Martin Weiss, Ph.D.
> Bilogy Director
> New York Hall of Science