Continuum Calcium 250ml

Continuum Calcium is a concentrated, ionic calcium supplement formulated for marine and reef aquariums. It’s designed to safely raise calcium levels — essential for healthy coral growth, coraline algae development, and proper shell/skeleton formation in invertebrates. The formula is free from acetate, gluconates, polygluconates, phosphates and silicates, meaning it won’t contribute unwanted organics or pollutants to your tank water.

When calcium gets depleted by coral or invertebrate growth, a dose of Continuum Calcium can restore optimal levels (the brand recommends aiming for around 410–450 mg/L Ca for reef‑keepers). The standard dosing guideline is about 5 ml (1 capful) per 200 L of marine water, 3–4 times per week — though exact dosing should be adjusted based on regular water testing and tank consumption.