Essential minerals lost during reverse osmosis and de-ionising water treatments are returned to the water by Tropic Marin Re-Mineral Tropic. It raises and stabilises the carbonate hardness and is also suitable for the preparation of tap water, which is too soft. Tropic Marin Re-Mineral Tropic for freshwater.Tropic Marin Re-Mineral Tropic+ minerals for hardness increase of reverse osmosis water and for soft tap water+ the water gets back all minerals that get lost during the reverse osmosis process+ alkalinity is raised and stabilized+ no by-products, no nitrates, no phosphates+ without sodium chloride (NaCl)Use of Tropic Marin Re-Mineral Tropic:Add one level measuring spoon full for 4 US gal./15 l of water. Ensure that you use the enclosed spoon to measure a precise amount of Tropic Marin Re-Mineral Tropic. Use the spatula provided to wipe over the spoon and level the powder. Sprinkle one measuring spoonful onto the surface of the reverse osmosis water while stirring the water. Wait fo