it Does these: 1-minimizing chemical changes in the water. 2-preventing sudden dangerous drops in acidity. 3-reducing phosphate and Nitrate 4-preventing excessive algae growth therefore reducing the water change need . and of course : 5-ADDS VITAMINS, TRACE ELEMENTS AND MINERALS enough??? Grab One(getting a 500Ml bottle is much more economical) and enjoy

22/06/06 | sandy mahoney

catalog.explore.reviews.rating.accessibility.label: 5/5

tetra aquasafe

tried and tested ,very good results. used for three years now .throughly.recommend.