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In 2007, Kusuri launched their new range of ready to use liquid bacteria. Probably the most powerful bacterial aid ever produced for fish keepers.


A number of dangerous pathogenic strains of bacteria like Aeromonas, Pseudomonas, E. coli, can cause catastrophic fish losses in ponds. This has created a strong demand for an effective preventive treatment that does not involve antibiotics, disinfectants, or any other sort of chemical product.


Kusuri Pro-100 is a preventive treatment that does not kill pathogens directly; it helps prevent and restrict their growth. Fish will turn off their immune system if poor quality persists, this encourages the pathogenic bacteria to proliferate and overwhelm the fish and pond. In simple terms, Kusuri Pro-100 out competes pathogenic bacteria by consuming its food source.



5ml per 1000 litres (220 gallons)

Add daily for 1 week, then after the initial dose, add 10ml per 1000 gallons every five days.


For our handy dosage calculator, click here!


(Below 15°C (59°F) increase dose to 20 ml per application)

Product suitable for use at 10°C (50°F) and upwards.

Kusuri PRO-100 500ml

SKU: MD929
  • Collection from our premises near Chepstow in South Wales by appointment or delivery to British mainland addresses.


    Delivery is £8.95 per order for most dry goods, with some more expensive delivery charges applicable for very heavy or long items.


    Please note delivery for dry goods is typically 2-5 working days and items may be sent in separate packages.

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