Tetra Pond Block helps clear cloudy water and remove algae from ornamental ponds or fountain water. Pond Block is limited for use in backyard/homeowner ponds and water fountains. For containerized ponds only. Not recommended for use with live plants. EPA registered.
- Helps control algae growth in ornamental fish ponds
- Works to clear water
- Safe for fish
- Each block treats 250 gallons 4 blocks