The Block™, 1 lb.


Regular price $32.99
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Save 20% when you buy 6 of this item. Use code: BULK20 at check-out.

  • 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
  • 1 lb. block treats up to 1 acre-feet of water (320,000 gallons)
  • Treat every 60 days for best results
  • Results may vary based on weather conditions and the use of other products

Safety Data Sheet