ReeFlowers kH Blend is a highly effective alkalinity and carbonate hardness (kH) enhancer solution that facilitates the structural development of corals oysters and similar aquarium inhabitants. Aerobic respiration and weak acids caused by decomposing organic materials lowers the alkalinity level in an aquarium. kH solution helps to bring stability to aquarium pH levels by increasing alkalinity levels. Every aquarium has a different kH consumption level. Before using the product determine the kH degree of your aquarium using an appropriate test kit. A maximum of 10ml of solution can be used per 100 liters of water at a time until the desired level is reached (10ml of solution provides 1dkH increase in 100 liters of water). Once the desired level is reached optimum consumption can be determined by means of periodical tests; solution can then be added daily or weekly as required. If the daily consumption level exceeds 05 dkH it is recommended that the solution is added continually via a dosing pump.