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Kusuri PRO-100 500ml

Kusuri PRO-100 500ml

Regular price £19.73
Regular price £28.09 Sale price £19.73
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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 initial dose, add 10ml per 1000 gallons every five days.

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

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

  • Experience

    We have over 40 years of experience in the industry

  • Koi Kare


    We are koi keepers too!

    We share the same passion as our customers

  • Availability

    We are only a phone call or email away. Do not hesitate to ask us questions - we love sharing our knowledge!

  • Competitive Pricing

    We regularly review our pricing to make sure our rates are fair for our customers

Frequently Asked Questions

How Much Is Delivery?

Our delivery is free for any orders over £100.

For all orders under £100 delivery is £4.99.

How Do I Make A Return?

To start a return, you can contact us at If you have a valid return instructions will be made on how to make the return.

Please do not post a return without contacting us first.

What Is The Best Way To Contact You?

The best way to contact us is via our contact page here.

How Soon Will I Get A Refund If I Make A Return?

Refunds will be processed within 7 days of us receiving and checking the item.

Need Advice?

If you need advice or help with what products to buy, please reach out to us on our contact us page.