Use Tetra Easy Balance to help avoid frequent water changes and to keep water fresh for up to 6 months, whilst promoting the health and wellbeing of aquatic livestock and plants. Easy Balance also helps control phosphate and nitrate levels, helping to substantially reduce algae.Tetra Easy Balance stabilises both pH and KH values in aquarium water and adds valuable vitamins, minerals and trace elements, essential to the health of your aquarium inhabitants.How to UseAdd 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.