Why is calcium required? Calcium is a major constituent of calcareous algae, skeletal material of hard corals and the skeletal needles of soft/leather corals. Calcium also fulfils many biological functions. These processes resu...
About All in One All in One can make the use of the so-called A and B calcium and alkalinity supplements unnecessary. It contains almost everything required for growth by corals and the beautiful encrusting pink and red coralli...