Kusuri Acriflavine

Kusuri Acriflavine

Targeted pond fish treatment for controlled, label-led use

1% is a liquid pond medication used for the treatment of bacterial, protozoal, and external fungal infections in koi and ornamental fish. It is effective against common conditions such as ulcers, fin rot, mouth rot, dropsy, and mild fungal infections. It is also reported to assist in reducing minor viral infections in fish. This treatment is safe for use in salted ponds but must not be used below 12.5°C.

Broad Spectrum Infection Control Kusuri Acriflavine targets multiple types of fish health problems in pond systems.

Kusuri fish health treatments should be used as part of a controlled diagnosis process rather than as a casual pond additive. Before using Kusuri Acriflavine, check ammonia, nitrite, pH and KH, observe the fish closely, remove as much uncertainty as possible and calculate the true pond volume. Many fish health problems are made worse by poor water quality, low oxygen or incorrect dosing, so the product label and manufacturer instructions should always come before general website guidance.

Kusuri medicine guidance emphasises accurate pond volume calculation, premixing treatments in pond water and maintaining strong aeration during medication. Their FAQ gives exact treatment intervals and dosage for several key medicines, so the manufacturer label should always be treated as the authority.

Diagnosis and treatment guidance

Use Kusuri Acriflavine only when the symptoms, fish behaviour and water test results support the treatment choice. If fish are flashing, clamped, lethargic, gasping or showing visible sores, first check water quality and oxygen levels because ammonia, nitrite or pH instability can cause similar signs. Where a parasite or infection is suspected, scrape and microscope confirmation is always preferable before treating valuable koi.

Key benefits

• Helps treat a specific pond fish health issue when symptoms match the label
• Supports a more controlled response than guessing with a general tonic
• Suitable for use after water testing and accurate volume calculation
• Useful in koi ponds, ornamental ponds or quarantine systems where applicable
• Clearer diagnosis helps avoid unnecessary treatment and repeat dosing
• Works best with strong aeration and careful fish observation during treatment

Technical information

• Brand: Kusuri
• Treatment type: Fish health and parasite treatment
• Product form: Liquid
• Target issue: Fish health issues, fungus, parasites, ulcers, wounds or treatment support
• Best use: Use when required after diagnosis
• Size: 1 Litre, 250ml, 500ml
• Dosage / capacity guidance: Dosage guidance: 10 ml per 456 litres
• Notable ingredients / actives: Acriflavine Key benefits Useful when a specific health problem has been identified Should be used after checking water quality and observing fish symptoms Helps pond keepers respon
• Important note: Use only when the condition matches the manufacturer label and water quality has been checked

How to use safely

The product label should always take priority over general guidance. The points below are included to help customers use Kusuri Acriflavine in a more careful and informed way.

• Test ammonia, nitrite, pH and KH before treating; poor water quality can mimic disease symptoms.
• Calculate pond volume carefully, allowing for shelves and irregular shapes.
• Increase aeration before and during treatment because many medicines reduce oxygen levels.
• Do not mix medications or overlap treatments unless the manufacturer specifically confirms it is safe.
• Remove carbon, zeolite or purifier media if the label instructs you to do so.
• Observe fish during treatment and stop if they show severe distress.
• Follow the label for repeat doses, treatment gaps and water change guidance.

Helpful related products and advice

Use these links to compare similar products in the same range or choose supporting testing, purifier or maintenance products where relevant.

• Kusuri 30 Formalin-Malachite Premix
• Kusuri Acriflavine and Malachite Premix
• Kusuri Anti-Bac
• Kusuri Biobalance
• Kusuri Brava Powder
• Browse pond treatments
• Browse pond water testing
• ultimate guide to koi health

Related treatment options

For similar pond treatments, compare Fish Health & Disease Treatments, Kusuri Acriflavine and Malachite Premix, Kusuri Chloramine T. These links are included to help you choose the right product for the same type of pond problem, rather than as random add-ons.