This forum is terrific! I have a 4 to 5 year old pond we had built that has never been anything but muddy brown. I did an Alum test last night and the difference was amazing. Now I am trying to find a source to purchase bulk Alum and Hydrated Lime. I called the local CoOp but they didn't carry either. Can anybody help me track down a source in the central Iowa area (near Des Moines)?
