Providing biologically-active filtration to a new tank is no longer a problem with Cycle! This super-concentrated formula works in freshwater and saltwater aquariums to keep fish healthy. Its all-natural formula is safe for all plants, animals or humans. Because of its biological filter-enhancing nature, it is ideal for use when new fish are added to your system, after medications are administered, or of course for new aquarium setup. Each dose works to reduce dangerous ammonia and nitrate levels in your aquarium as well.
Treats up to
New Aquariums Day 1: 25 mL per 38 L (10 U.S. gal) Day 2: 10 mL per 38 L (10 U.S. gal) Day 3: 10 mL per 38 L (10 U.S. gal)
All regular maintenance activities (water changes, filter maintenance, etc.) 5 mL per 38 L (10 U.S. gal)
After adding new fish and/or medicating 10 mL per 38 L (10 U.S. gal)
Weekly dosage to maintain a strong beneficial biological colony 5 mL per 38 L (10 U.S. gal)
Bacterial suspension that contains no substances that are classified by Canadian WHMIS.
I've been using Nutrafin Cycle for years to balance and refresh my 115 gallon cichlid aquarium with each water change. The half-gallon size lasts about a year, easily worth the $50 or so that it costs. I haven't lost even one fish to disease.