NT Labs Koi Care KH Up Buffer5kg NT Labs Koi Care KH Up Buffer maintains pond water pH at the correct levels for maximized health, growth and development of all of your pond fish. The expertly blended formula is suitable for koi fish and will treat 34,000 litres of pond water. Koi Care KH Up Buffer from NT Labs replaces KH Buffer levels that are often depleted by fish metabolism. If these levels are not replaced effectively, pH can crash in your pond, causing death of your fish or sudden ill health. KH levels should be monitored regularly to ensure that you are giving your fish the best possible conditions to grow and develop in. These levels can be tested with Pondlab Hardness Test Kit which allows both advanced or new beginner hobbyists to maintain correct KH levels above 6 degrees carbonate hardness. NT Labs Koi Care KH Up Buffer has been developed using the highest quality ingredients to ensure fast and effective pH maintenance levels, for improved living conditions for koi and other pond fish. At a Glance: Size: 5kg Treats 34,000 litres Maintains pond water pH at the correct levels For maximized health, growth and development of all of your pond fish Developed in-house by experts at NT Labs Suitable for advanced or new beginner hobbyists Suitable for koi fish 1kg will treat 6800 litres of pond water Fast acting Easy to dose High quality ingredients