The Block™, 5 lb.

• Increases water clarity
  
• Significantly reduces noxious odors caused by hydrogen sulfide, dead plant material, and fish waste
• Reduces ammonia and nitrogen levels
• Dissolves away organic sludge
• Improves dissolved oxygen levels
• Effective over a wide range of pH conditions and water temperatures
• 5 lb. block treats up to 5 acre-feet of water (1.6 million gallons)
  
• Treat every 60 days for best results
• Results may vary based on weather conditions and the use of other products

Safety Data Sheet