>>I find the dark blue 55 gallon plastic barrels are the best and retard algae with their dark color.<< I've often toyed with the idea of adding a "rain barrel" to one of my down spouts to collect water. Anyone have experience with this? I'm concerned about: Cost (wooden barrels are expensive) Filtering out debris Insect control (is screening adequate) Bill Vannerson http://ourworld.compuserve.com/homepages/william_vannerson