ReeFlowers Caledonia Sea Salt is produced from natural sea salt. It does not contain additives. High purity minerals are used. The values ??of kH, calcium, magnesium, potassium, strontium and trace elements have been enriched to provide the closest values ??to natural ocean water in order to ensure that living things remain healthy for a long time. It is purified from elements such as phosphate, nitrate, iron and silicate which may cause algae formation. It is produced with intelligent particle technology , which ensures stable water in every use. INSTRUCTIONS FOR USE Add 35 g of ReeFlowers Caledonia Sea Salt for each 1 liter of R / O water to ensure that the salinity is 33.5 ppt and mix thoroughly until it is completely dissolved. WATER PARAMETERS at salinity 33.5 ppt Alk / Kh: 3.4 meq / L / 9.5 dkh Ca: 420 ppm Mg: 1280 ppm K: 390 ppm