Tetra Anti-Algae Pond Block - 4 Blocks per Pack - Same as Jungle Pond Block

Directions for Use
Use one block for water volumes between 100 and 250 gallons. Initial dose may require one block for each 100 gallons. For regular maintenance, replace block when fully dissolved (usually after 30 days).

• Not recommended for use with live plants.
• For containerized ponds only.
• Pond block is limited for use in backyard/homeowner ponds and water fountains (maximum 3,000 gallons).
• Do not use fish from treated ponds or fountains for food or feed.
• Pond Block helps clear cloudy water and removes algae from ornamental pond/fountain water.

Warning: This product contains a chemical known to the State of California to cause cancer.

EPA#: 33034-1-81584; EPA Est. No. 33034-TX-1

Active Ingredients
Copper sulfate pentahydrate 1.02%
Diuron [3-(3,4 dichlorophynyl)-1, 1-dimethylurea 0.51%
Other Ingredients 98.47%
Total 100%