Bio-Spira® saltwater aquarium bacteria helps reduce dangerous levels of nitrite and ammonia.
Product No. 77963
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BIO-Spira® makes your marine aquarium fish-safe instantly.

With patented nitrifying bacteria, BIO-Spira® accelerates the establishment of the bio-filter in newly set up saltwater aquariums. The live bacteria start working immediately to provide a safe and healthy environment for your fish without the long wait. BIO-Spira can also be used after a water change, when adding new fish or after medicating.

  • Live nitrifying bacteria start working immediately to reduce dangerous ammonia and nitrite
  • Prevents new tank syndrome
  • Patented mix of nitrococcus, nitrosomonas, nitrosospira and nitrospira is proven to work
  • Shelf-stable – requires no refrigeration
  • 5 mL treats 10 gallons of water
77963 - 3.38 fl oz
77964 - 8.45 fl oz