NUTRAFIN Cycle is a biological aquarium supplement. It features five times the biomass of the current generation & is composed of 5 strains of nitrifying bacteria & the correct balance of heterotrophic & lithotrophic bacteria. A special preparation process captures the bacteria in so-called ´bio flocs´ which are easily recognised in all Nutrafin Cycle bottles. Thanks to the enhanced faster acting formula with increased biomass & enhanced bacterial stability Nutrafin Cycle will efficiently get to work reducing ammonia & nitrite. Nutrafin Cycle is a pure concentrated product which starts to take effect immediately. The fast acting formula immediately creates a habitable environment for your fish. Nutrafin Cycle is suitable for use in fresh & salt water. Nutrafin Cycle at a glance Increased biomass for a rapid reaction & enhanced nitrification The bacteria adapts itself to even the most extreme situation Increased stability Immediately active Easy to store (no refrigeration necessary) Use Nutrafin Cycle When establishing a new aquarium When introducing new fish When you change the water When cleaning or changing the filter medium When using medication When you lose fish As a weekly addition to retain optimum water quality