Kusuri Klay

Kusuri Klay

Mineral, clay or buffer treatment for stable pond water and koi support

Kusuri at Exeter University, this unique clay also helps remove stress proteins from the digestive tract of koi caused by exposure to airborne fungal and algal spores in food. Regular use improves digestion, water quality, and overall koi health. Water Remineralisation & Clarity Improves natural pond balance and water quality.

Mineral, clay and buffer products are used to support water stability rather than to mask a deeper water quality problem. Products such as Kusuri Klay are most useful when KH, GH, pH, mineral content or suspended fines need attention. Testing first is important, because very soft water, low KH or unstable pH can affect fish health, filter bacteria and the way other treatments behave in the pond.

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.

Water balance guidance

Use Kusuri Klay with an understanding of your pond’s KH, GH and pH stability where relevant. Mineral and buffer products can be very useful, but sudden changes should be avoided. If the pond is very soft, heavily stocked or exposed to heavy rain dilution, regular testing gives a safer picture than occasional guesswork.

Key benefits

• Supports more stable pond water chemistry
• Useful where KH, GH, minerals or suspended fines need attention
• Can help support koi condition, skin quality or water clarity depending on the product
• Works well as part of a measured maintenance routine
• Testing first helps avoid unnecessary or incorrect dosing
• Useful in soft water areas or ponds affected by heavy rain and dilution

Technical information

• Brand: Kusuri
• Treatment type: General pond water treatment
• Product form: Liquid / pond treatment
• Target issue: General water quality, seasonal pond support and maintenance
• Best use: Year round
• Size: 1kg, 25kg, 3kg, 8kg
• Dosage / capacity guidance: Dosage guidance: 25g per 2,273 litres

How to use safely

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

• Test KH, GH or pH where relevant before dosing.
• Add gradually if the label recommends staged dosing rather than one large correction.
• Keep strong aeration when using powdered treatments that temporarily cloud the water.
• Do not use mineral products as a substitute for correcting underlying water quality issues.
• Check compatibility if using alongside medicines or blanketweed treatments.
• Allow filters and skimmers to clear fine particles after application.

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
• Kusuri Acriflavine and Malachite Premix
• Kusuri Anti-Bac
• Kusuri Biobalance
• Browse pond treatments
• ultimate guide to koi health

Related treatment options

For similar pond treatments, compare pH, KH & Mineral Treatments, Kusuri Powder Gold, Mr Koizumi Clay 86. These links are included to help you choose the right product for the same type of pond problem, rather than as random add-ons.