Made of 100% zeolite, Ammo Rocks draws and soak ups toxic ammonia. Promotes nitrifying bacteria to control ammonia and nitrite levels in the fishpond, and will help boost filter effectiveness. Perfect media for biological filtration.

For more info click “Technical Specs”

• 100% natural zeolite
• Perfect biological filter media
• Removes toxic ammonia from fish ponds
• Promotes faster biological filter development
• Recommended for new pond setups and spring start up