Bio Cycle Quick (Pro Nitro Cycle Formulation) Bio Cycle for Aquarium is a Special Formulation of Healthy Bacterias, Enzymes &Micro Organisms Consisting more than 7 Major Strains of (Aerobic & Anaerobic Types) Consisting of Nitrosomonas, Nitrobacter & Photosynthetic Strains with Yucca Extracts. Rapidly Colonizes Your Aquarium with Bacteria�s necessary for the Nitrogen Cycle. Allows Immediate Additions of Fish in New Tanks Aids in Treating New Tank Syndrome. Ideal for Cycling/ Seeding a Marine Tank Reduces Waste Break Down Time Needed to Maximize Filtration/ Skimmers Efficiency. Stabilizes the Biological Cycle & Provides optimal water Parameters in Fresh Water/ Marine Tanks. Breaks Down Biological Wastes / Protein Sludge in Koi Ponds & Aquariums. Recommendations: Bio Cycle for Aquarium Quick Easily Assimilates in Tan/ Biological Media Interface and Quickly Starts Consuming Wastes causing Ammonia & Nitrite by Rapidly Colonizing and establishing the Nitrogen Cycle Aiding Biological Filteration. Highly Recommended to use While starting a New Aquarium/ Treating Unmatured Cloudy tanks. For Best Results use with every Water Changes, Replacing New Biological Media & Post Medications. Whenever Ammonia or Nitrite is detected. Add Directly to the Tank/ Sump or Biological Media Chamber. Shake Well Before Use.