Fluval Cycle Biological Enhancer, Aquarium Water Treatment, 16.9 Oz., A8351

(681 Reviews)

Price
$16.78

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Quantity
(50000 available )

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370 Ratings
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Reviews
  • joe

    > 3 day

    Wow it actually works

  • SherylD

    > 3 day

    Where was this all my life?

  • Chris

    > 3 day

    There where no difference using this product for the purpose of cycling the water Ammonia, Nitrite and Nitrate levels.

  • Barry Landau

    Greater than one week

    Works great.....no negative reaction when adding to your aquarium from tropical fish.

  • Nash

    Greater than one week

    Its a great product. It helps cycle the fish tank.

  • michelle Klein

    > 3 day

    Great stuff!

  • Frank Yang

    Greater than one week

    This is better than API Stress Zyme. Been using the fluval bio-engancer for 5 months now. This is honestly better than majority of the bio-enhancers out on the market right now.

  • MAlv

    08-06-2025

    Great product

  • Ronald J Clanncy

    > 3 day

    Works well with my fish.

  • Jared M

    > 3 day

    I was skeptical about it working as quickly as it states, but I am truly amazed. I just got a 75 gallon tank and wanted to cycle it as quickly as possible. I followed the directions as stated on the bottle for setting up a new tank and amazingly my tank cycled in about 3 days. I tested each day and watched the ammonia and nitrite levels go to zero in 3 days. It did make the water cloudy, but nothing a good water change cant fix. Truly amazing product and I would highly recommend using if you would like to cycle your new tank quickly and easily.

Fluval Cycle Biological Enhancer is a responsive biological aquarium supplement that ensures that all aquariums are immediately inoculated with a powerful team of beneficial bacteria, providing a safe biological habitat for your fish. These highly effective micro-organisms will create a biological flora that quickly metabolizes lethal ammonia and nitrite and allow for the immediate introduction of fish. Fluval Biological Enhancer goes to work fast, releasing massive amounts of beneficial bacteria that eliminate toxic ammonia and nitrite to establish a biologically-balanced aquarium. Fluval Biological Enhancer is strongly recommended for new aquarium set-ups and regular application will help to exclude the establishment of undesirable bacteria in aquariums.

For more fish tank accessories, check out other Fluval products including aquarium filters, aquarium heaters, aquarium air pumps, aquarium lights, aquarium rocks, aquarium thermometers, and aquarium stands. Fluval has a wide variety of products that are perfect for your pet fish to enjoy in any large fish tank, small fish tank, saltwater tank or freshwater tank. Fluval broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.

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