"Can be used in addition to the ZEOvit® system, especially when starting with the ZEOvit® method. Removes yellowing compounds and cloudiness in a biological way. Recommended in any tank system. Reduces nitrate and phosphate when used regularily. Dose directly into the tank. Switch off skimmer for about 1 h if possible. We recommend dosing after water changes or against problems in your tank. 1000 ml for 5000 L / 1250 gallons water."