General Information about Bio-Spira™
  • Bio-Spira™ (from Marineland) contains the actual living bacteria responsible for nitrification in an established tank.
  • Bio-Spira™ is useful to:
    • Cycle a new aquarium.
    • Add more bacteria to a bio filter, such as when adding more fish.
  • Bio-Spira™ should not be used though as an attempt to expand a tank’s bio filter beyond its’ recommended limit. For example, if you have severely overstocked a 20-gallon tank with 6 goldfish, then adding Bio-Spira, in an effort to make the bio filter larger in an attempt to neutralize the very large amount of ammonia produced by the goldies, is not the answer.
  • There are separate versions of Bio-Spira™ for freshwater and saltwater tanks. You can get Bio-Spira™ in a one-ounce size to treat up to 30 gallons or three-ounce size for 90 gallons for freshwater usage and a three-ounce size for up to 55 gallons for the saltwater cycling.