Tetra Pond Block® - Removes Pond Algae Size:4 Blocks The parasites or bacteria become

The parasites or bacteria become resistant to the treatment

Also includes 1/2" barb connector and 1/2" barb plug

This specially-designed treatment is great for use in non-aerated or highly eutrophic bodies of water

Built-in memory setting in case of power loss

we are the first fish food manufacturer to commercially produce a food with such variety

Tetra Pond Block® - Removes Pond Algae Size:4 Blocks The parasites or bacteria becomeRemoves pond algae for clean and clear pond water. Pond Block helps control algae growth in ornamental fish ponds. For containerized ponds and fountains only. Not recommended for use with live plants.