Instant Ocean® Bio-Spira Water Treatment for Aquarium 250 Ml

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.