John, dont know why its such a concern but try some algacide available from
your local swimming pool chemicals dealer or KMart, ,etc. wherever pool
supplies are sold...

>Greetings!
>     Here is a question about dehumidifiers.  I have two dehumidifiers,
>running full blast, 24-7, in an 1858 log cabin.  There is growing, in the
>discharge pan, what appears to be green algae.  The pans drain out through
>plastic tubing that runs through the wall chinking into the flower beds
>outside.  Is there anything I can put in the discharge pans to kill the
>algae?
>
>John C. Hale II  ([log in to unmask])
>Archives Technician & Curator of the Log Cabin Medical Museum
>Scott and White Archives
>Scott and White Memorial Hospital and Scott, Sherwood and Brindley
>Foundation, Temple, Texas

Michael Bogle
& Peta Landman
& Ariel Bogle
429 Riley Street
Surry Hills, Sydney
New South Wales
Australia 2010
(61) (2) 9212 7069