Our guest at 8:30 is Louis Dam of Dramm -- the watering equipment company; he lead off by telling us that people always get his name and the name of the company confused.   What is less confusing is, the extent to which Dramm's lines of watering equipment have risen to the challenge with many, many innovations design to solve the problems of home gardeners and commercial agriculture alike.   Louis talked about the science and the social parts of this, and his level-headed approach to hydrating the garden!