Fluval Cycle Biological Booster Water Conditioner

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8.4-oz bottle
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Description

Create a safe biological environment and immediately add your fish to your aquarium with Fluval Cycle Biological Booster Water Conditioner. Routine aquarium setups require several weeks of cycling before fish can be added. Fluval Cycle Biological Booster Water Conditioner disperses large amounts of live beneficial bacteria to quickly consume toxic ammonia and nitrite and create safe conditions for your fish. Use for new aquarium setups, water changes, when replacing or cleaning filter media and when ammonia or nitrite are detected.

Key Benefits
  • Allows for the immediate addition of fish to a new freshwater or saltwater aquarium. Rapidly establishes a safe biological aquarium environment and metabolizes dangerous fish waste
  • Prevents loss of fish, reduces aquarium maintenance, and removes organic matter that can cause toxic levels of ammonia, nitrate,and other pollutants. Digests waste in filters, gravel and surfaces.
  • Safe for plants, animals or humans. No refrigeration required. Appropriate for both fresh and saltwater environments
  • Bio-floc technology ensures product stability, efficacy and shelf life
  • Every container contains pure, safe bacterial colonies, free of undesirable contaminants
Precautions

HAZARDS TO HUMANS: Keep out of reach of children. If swallowed seek medical advice.

See all items by Fluval

  • Item Number
    96672
  • Aquarium Type
    Freshwater, Saltwater
  • Brand
    Hagen
Instructions

Shake well before using.

Dosage for new aquariums: Day 1: 25 mL per 10 US gal Day 2: 10 mL per 10 US gal Day 3: 10 mL per 10 US gal

Dosage after adding fish and/or medicating: 10 mL per 10 US gal

Weekly dosage for regular maintenance activities & to maintain a strong beneficial biological colony: 5 mL per 10 US gal

FAQ

I would like to cycle a new fishless aquarium by using decomposing food or ammonia. Can I use Fluval (Cycle) Biological Enhancer with this option?

Yes, however, we don't recommend either method. Ammonium chloride dosing usually results in excess ammonia concentrations, which prolongs the cycle and adds unnecessary pollution. If you already have a healthy aquarium, transfer some established filter media and dose with Fluval (Cycle) Biological Enhancer.

How do the nitrifying bacteria in Fluval (Cycle) Biological Enhancer survive in a sealed container?

This bacteria has been conditioned to enter a dormancy phase prior to bottling that allows it to survive with minimal food and oxygen intake. It is activated very quickly after introduction to your aquarium.

What are those small beige particles that float around my aquarium after applying (Cycle) Biological Enhancer?

These particles are called Bio Flocs, which help provide a safe environment for your fish. As per the product instructions, shake the bottle well before each use to include Bio Flocs with each dose.

Customer Reviews

11 Reviews 11 Reviews 4.5 out of 5 Stars

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91% Recommend

91% of reviewersrecommend this product

4.5 / 5

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11 Reviews

Showing 1-10 of 11 Reviews

  • 5 out of 5 stars

    Fluval makes the best products!

    By on

    If you own an aquarium, you need this product. It helps get the bacterial chemistry in your tank right. Great for adding fish, water changes and setting up new tanks. Worth the money.

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  • 4 out of 5 stars

    Unbeatable price

    By on

    Purchased it for the price and recommendation. I believe it work since gold fish is still doing great after adding this the first day.

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  • 1 out of 5 stars

    Waste of money

    By on

    I have now bought 2 bottles of this, after reading such positive reviews. Neither bottle worked. No cycle established. Had to remove my Axolotls from their big tank to cycle the old fashioned way. Thought the first bottle might have been a dud, but had no results with the second bottle, either.

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  • 5 out of 5 stars

    Great Product From Fluval

    By on

    I have been using this for almost 2 years and I love it!

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  • 5 out of 5 stars

    Successful cycle

    By on

    This product assisted me to reinitiate a cycle in my tank after cycle was halted by huge drop in PH by my water district.

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  • 5 out of 5 stars

    Best bacterial additive

    By on Top 500 Contributor

    Have used this in all 5 of my tanks & Koi pond, helps in keeping the toxins in check with the bacteria booster for ammonia & nitrites, safe for Freshwater or Saltwater.

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  • 5 out of 5 stars

    Great stuff

    By on

    Worked well in tank. Others leave a film but this one doesn't.

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  • 5 out of 5 stars

    Fish head

    By on

    I like my fish to live and it is doing just that. I started my tank a month ago and its the best product I found

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  • 5 out of 5 stars

    Always quick

    By on

    Always quick delivery and always what I need I will definitely keep using chewy for all my pet needs unless they screw up big-time

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  • 5 out of 5 stars

    Great!

    By on Top 250 Contributor

    I redid my 55 gallon community tank, and (despite leaving the filters running), wanted to be sure I didn't crash my cycle so I added it as prescribed. No level fluctuations, as if it cycled the tank instantly upon adding. would recommend!

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