Seachem Reef Advantage Calcium 250gr

Non-corrosive optimized calcium ion blend that restores and maintains calcium levels as in natural seawater.

Dosage: For beginners: 1 spoonful for 150 litres of aquarium, 2 times a week. Dissolve first in a cup of fresh water. Measure calcium 2 times a week and number the dose and frequency accordingly. Advanced: Check calcium levels and follow the above instructions until calcium reaches normal levels (380-420 mg/L ). Then adjust dosage so that calcium remains at normal levels. Each dose will increase calcium by 12 mg/L. The amount and frequency of dosing can be adjusted but do not exceed 25 mg/L per day. Available in 250ml, 500ml and 1000ml packs.