An essential part of fish keeping is regular water changing. However these changes can be highly stressful periods for your pet fish. Tetra Easy Balance creates and maintains a healthy, balanced environment which is just the thing for safely reducing the need for frequent water changes. Tetra Easy Balance maintains excellent water quality for healthy fish, plants, and filter bacteria, just simply add the required amount once a week. Tetra Easy Balance stabilises aquarium pH, replenishes and maintains KH, actively reduces phosphate and nitrate, adds all essential minerals, vitamins, and trace elements.Tetra Application Guidance:Add EasyBalance to the aquarium at a rate of 2.5ml per 10litres (2 gallons) every week, to replace regular water changes. Perform a 50% water change, using tap water conditioned with AquaSafe, at least once every 6 months. When using EasyBalance, ensure that the aquarium is properly aerated. EasyBalance is only suitable for use in mature tanks, with a fully functioning filter. It is still important to keep the gravel clean while using EasyBalance, through occasional siphoning with a TetraTec GC gravel cleaner.