The Line Extra Calcium Buffer is a highly effective calcium supplement designed to maintain optimal levels of calcium in saltwater aquariums. This essential product helps ensure that corals and calcareous algae receive the necessary nutrients for growth and health, contributing to a thriving reef ecosystem. Recommended by experts, this buffer can be used every other day or as needed to keep the calcium concentration within the ideal range of 412 - 450 ppm. To use, it is suggested to prepare a stock solution by dissolving approximately 10 grams of Extra Calcium in 0.2 liters of RO water.