ReeFlowers Minor & Trace Elements is specially designed for aquatic systems using calcium reactors and Kalkwasser. When used in conjunction with ReeFlowers Enriched Kalkwasser in these systems all general element requirements are met. Use 1ml for every liter of saturated ReeFlowers Enriched Kalkwasser solution. It is recommended that 3ml should be added for every 100 litersof water on a weekly basis for average loaded aquariums. In long term use the amount of weekly consumption should not exceed 6 ml per 100 liters.