If you have struggled to keep the water in your little pond sparkling clear, this may be the trick you've been looking for. I have tried this on several different garden ponds, ranging in size from 450 to 1200 gallons, and it has worked every time. Murky water clears within a day or two (most clear within hours), and then stays clear for months.
For more details and other pond and garden ideas, visit me at http://www.empressofdirt.net
I learned everything to start from www.gardenweb.com in their forum section.