Well, I went to my local greenhouse, and they didn't have Benlate 
or Captan.  What I ended up buying was a product called 'No-Damp: 
Fungicide for Damping Off' made by Plant Products Co. Ltd. in Burlington 
Ontario.  The active ingredient is Oxine Benzoate (2.5% by volume).  The 
instructions say to dilute 10mL in 1L of water (distilled and de-ionized 
of course!).  This is applied at the base of the seed tray (ie: in the 
watering tray).  Has anyone ever used this stuff before?  Any comments 
would be appreciated.  Thanks in advance.
Sincerely,
Chris Teichreb
Department of Biology
University of Regina
Regina, Saskatchewan, CANADA
e-mail: teichrch@Meena.CC.URegina.CA