Red Sea Foundation Calcium+ A is a premium concentrated calcium supplement specially formulated to maintain and replenish calcium levels in reef and marine aquariums. As part of the renowned Red Sea Foundation programme, Calcium+ A works in conjunction with the complete Foundation series to maintain the ideal balance of calcium, alkalinity, and magnesium essential for healthy coral growth and a thriving reef environment. Calcium is a critical element required by stony corals, coralline algae, and other reef invertebrates for skeletal development and overall vitality. Red Sea Foundation Calcium+ A delivers a highly concentrated and pure source of calcium that is easily absorbed and utilised by reef inhabitants, helping to prevent calcium deficiency and support strong, healthy coral growth. Easy to dose and compatible with all Red Sea Foundation supplements, Calcium+ A is a trusted and essential component of any reef aquarium maintenance routine, providing hobbyists with a reliable and effective solution for maintaining stable and optimal calcium levels in their marine aquarium.