Calcium is necessary for corals to grow and its deficiencies may result in significant inhibition or stoppage of growth. Ca Plus supports calcification and provides corals healthy growth as it was created for maintaining shortages and sudden drops of calcium levels thanks to its very assimilable form that ensures easy raising of calcium levels in the aquarium. The effectiveness of Ca Plus supplementation depends on the proper KH level, therefore it is recommended to use products that raise carbonate hardness (KH Plus or KH Buffer).
Dosage
10 ml of the product increases the calcium level by 20 mg/l (ppm) in 100 litres (27 US gal) of water. 
Please remember, that maximum safe daily dose is 10 ml per 100 litres of water. If you need a higher dose, split it into a few days.
We recommend using a dosing pump to dose calcium solution slowly throughout the day.
Recommended level: 380 – 460 mg/l (ppm). 
We recommend dosage based on the individual tank’s needs.