I just registered here and am extremely impressed with the amount of information available in this forum. I wanted to share my recent experience with an algae and plant removal product. We have a friends that have couple of ponds on a ranch that really get overrun by hydrilla, to the point where fishing and swimming are not possible. They tried a microbial product called Natural Enviro 4000 Algae/Hydrilla removal. This stuff knocked out the hydrilla and the other nuisance plants in a couple of weeks.

Has anyone else used microbial products before. What was your experience?