ReeFlowers African Trace contains trace elements required by African Cichlid species. Water used in aquariums may be insufficient to keep African Cichlids healthy; the lack of minerals that are found in the fishs natural habitat can lead to colours becoming dull inhibition of breeding activities and reduction in skeletal and scale development. ReeFlowers Cichlid Trace provides the elements required by African Cichlid fish creating a healthier environment and boosting fishs vitality. This product can be used for all Africa Cichlid species. 6 ml of Chiclid Trace should be added for every 100 liters of water on a weekly basis for Tanganyika Lake Aquariums and 3 ml for every 100 liters of water each week for Lake Malawi & Victoria Aquariums. Average dosages are determined based on the assumption that water is changed regularly.The water that you use may vary so the gH value of the aquarium should be checked on a regular basis. gH values in the range of 15-20 dgH are recommended for Tanganyika Lake Aquariums and 10-15 dgH for Malawi & Lake Victoria Aquariums. 20 ml of solution increases the gH value of 100 liters of water by 1 dgH.