Fresh-water anti-cyanobacteria kit 250 ml
  • Fresh-water anti-cyanobacteria kit 250 ml
  • Fresh-water anti-cyanobacteria kit 500 ml

Fresh-water anti-cyanobacteria kit


Anti-cyanobacteria treatment for a fresh-water aquarium.

Eliminates algae in your aquarium, and works effectively to fight against cyanobacteria.

This product is 100% effective against cyanobacteria, red algae and green algae.

Based on 32 reviews

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Cyanobacteria – act quickly!

Cyanobacteria are a real hazard in freshwater aquarium keeping. Green in colour with blue tinges, they adhere to the substrate, algae and plants in an aquarium, and release cyanotoxins. Cyanobacteria proliferate very quickly, and eventually start to kill your aquarium’s occupants. This often results in a crash, especially if the owner is away for any length of time.

Consequently, once they first appear in your aquarium, we recommend you act quickly, and apply the daphbio® anti-cyanobacteria freshwater treatment which should bring the infestation to an end.

Effects of the daphbio® anti-cyanobacteria kit  

The cyanobacteria will start to show signs of weakness from day four of the treatment. They shrink in volume and number as they start to die off. We recommend that you siphon the cyanobacteria and residue from your aquarium at this stage.

In the majority of cases, treatment needs to run for 5 or 6 days to completely eliminate the cyanobacteria, but if need be, you can continue the treatment for a further 5 days.

Once the treatment has ended, daily use of Bactofresh will ensure your aquarium is once again magnificent.


Our anti-cyanobacteria kit, available in 250-ml or 500-ml sizes, comprises one bottle of Bactofresh and one bottle of anti-cyanobacteria bacteria, to effectively combat cyanobacteria.

Anti-cyanobacteria kit: choosing the right size 

  •  For an aquarium of 50 to 300 litres, use the 250-ml size anti-cyanobacteria kit.
  • For an aquarium of 300 to 600 litres, use the 500-ml size anti-cyanobacteria kit.

Instructions for use and recommendations

Do not swallow.

 Recommended dosage:


Upon receipt of the product, use 2 ml of Bactofresh per 100 litres of tank volume, preferably in the morning, every day for one month, then every other day.

Anti-cyanobacteria product:

  • For aquariums of 50 to 100 litres, pour in 30 ml of anti-cyanobacteria for 6 days.
  • For aquariums of 100 to 200 litres, pour in 40 ml of anti-cyanobacteria for 6 days.
  • For aquariums of 200 to 300 litres, pour in 50 ml of anti-cyanobacteria for 6 days.
  • For aquariums of 300 to 500 litres, pour in 60 ml of anti-cyanobacteria for 6 days.

Carry out the treatment every evening for 5 or 6 days, you can turn off the filtration for 5 minutes.

Experts recommend siphoning out your cyanobacteria before treatment starts, and again four days into the treatment. They can indeed release cyanotoxins that are deadly for its other occupants. Continue to pour Bactofresh in the morning for 4 weeks in a 30% sub-dose, preferably pouring the anti-cyano directly onto the cyanobacteria.

 during the anti-cyanobacteria treatment and for 10 days afterwards.


Keep products in the refrigerator upon delivery, except for Bactofresh which is stored at room temperature.

Customer reviews

Reviews about this product

Based on 32 reviews

  • 5

    Cyanobacteria have been eradicated (Translated review)

  • 5

    Very effective (Translated review)

  • 5

    I bought this anti-cyanobacteria kit after having used others that were ineffective. I had previously cleaned the set thoroughly and replaced overly stained plants and since using it the cyano has not returned. (Translated review)

  • 3

    Cyanobacteria have disappeared but another type of algae has taken their place... (Translated review)

  • 5

    formidable effectiveness, best product I have tested for the moment. (Translated review)

  • 5

    For the moment, I am happy with the effectiveness of the treatment (Translated review)

  • 5

    After one week I have no more algae (Translated review)

  • 5

    Really efficient, very satisfied (Translated review)

  • 5

    Super efficient (Translated review)

  • 5

    seems to be effective in the long term (Translated review)