How often should I treat my water feature (pond, fountain, stock tank, lake)?

All of Healthy Ponds products are designed to last for 30 days. The spheres have a patented time-release feature that allows the continuous release of bacteria and enzymes over a 30-day period. Bacteria normally live for 7-10 days, so the time-release is very important. This also means that the sphere will need to be replaced because the bacteria will not be effective after 30 days. A new sphere will be needed to continue treatment.