0 items

view cart

Questions? Call 1-888-THAT-PET
Shop By Category

    Nutrafin Cycle - 68 oz.


    Item # 244163 / Manufacturer Part # A7906

    Was $88.69
    Now $56.48
     (Out of Stock)
    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.
    Package Size68 oz.
    Treats up to4000 gal.

    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.

    Average Rating

    NUTRAFIN CYCLE 4/8/2014

    Reviewer: Jan

    I recently purchased a 75 gal tank to replace one which had become unusable, but had nowhere to put all the fish as the tank was cycling. So I bought CYCLE and nervously used it with all the fish in the new tank. I had never cycled a tank with the fish in it, but I was able to do so successfully. Every fish did quite well during this period - thanks to CYCLE. I highly recommend this product, and now use it for all my tanks at water changes.

    Nutrafin Cycle 6/3/2013

    Reviewer: Jim

    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.

    Related Items
    API Stress Coat + - 16 oz.

    API Stress Coat + - 16 oz.


    Prime - 16.9 oz.

    Prime - 16.9 oz.


    API Stress Zyme +  16 oz.

    API Stress Zyme + 16 oz.


    API Tap Water Conditioner - 16 oz.

    API Tap Water Conditioner - 16 oz.