Safe for Wildlife and 100% Natural
Designed to prevent pond issues before they arise and promote pond health without hurting plants, animals or humans. Simply toss the sphere, which will biodegrade, into your pond. Works by consuming excess nutrients such as nitrogen and phosphorus in the pond, eliminating unwanted organic matter. Treats fresh-water ponds and lakes for up to 30 days. Add a new sphere every 30 days to treat your pond whenever water temperatures are 45ºF or higher. Use all season long. You cannot over treat your water, but under treating it might not yield the desired results.