Wattronix Calcium Supplement provides an initial concentrated source of Calcium necessary for the growth of hard corals, invertebrates and other crustaceans. Setting high Calcium levels (450-500) ppm will encourage the growth of colourful encrusting coralline algae.
 
One bottle (230ml/8oz) will raise the Calcium level pf 50 USG by 100 ppm. (Quality marine salt mixes contain approx 400-450 ppm Calcium levels). After setting an initial Calcium level with Wattronix Calcium Supplement, for best results maintain the Calcium level at 450 - 500 ppm on a daily basis using Wattronix Calc-water. Alternatively, add 5 ml (1 tspn) of Wattronix Calcium Supplement per 50 USG twice per week.