Reef Advantage Calcium is a blend of ionic calcium which will restore and maintain calcium to the levels found in natural seawater.
Corals need both calcium and carbobates to grow and if either becomes lacking the growth will cease and the health of the coral will suffer.
As well as essential calcium, it also contains magnesium and strontium in correct amounts.
Unlike some products, Reef Advantage Calcium will not deplete magnesium because it does not have a caustic pH. Neither will it deplete alkalinity if used as directed.
Beginner: Use 5g per 150 litres twice a week. Dissolve in at least 250ml of freshwater. Check calcium every two weeks and adjust amount or frequency accordingly.
Advanced: Check calcium level, then follow addition regimen above until calcium is adjusted to 380–420 mg/L.
Each 5 g/150 litres will raise calcium by about 12 mg/L. Quantity or frequency can be adjusted, but do not exceed 10 g/150L per day. Thereafter, use as required to maintain calcium.
Expert: After determining the calcium consumption rate, set up a continuous drip system. Use the following formula to determine how much to add to your top-off water: m=vc/400 (m=grams to add to top off water, v=volume of tank in liters, c=amount to raise calcium in mg/L).
Do not overdose. Excess calcium may enhance the loss of carbonate alkalinity. Do not directly mix with any carbonate supplement. It is best if calcium and carbonate additives are added on alternate days or at least 30 minutes apart.