BC - I almost hate to chime in. You've been doing great from my vantage point in the cheap seats. I did want to add something for thought. I'm presently conducting some field tests with an oxidizing agent for algae control (EPA registration pending). This granular product (moisture-activated) works rapidly on most forms of algae using a priciple simular to that which barley straw imparts. But, unlike barley straw, it may be used for localized & partial-area treatments. The enticing aspects of this product are 1) algal-impact is immediate, 2) yet, as an oxidizing agent, O2 and hydrogen are released as a RESULT of this product's interaction with algae, and 3) it is non-toxic to fish and has minimal impact on aquatic invertebrates. If interested, I'll let you know how the trials go.
