Brightwell Aquatics ReefCode B-P is an essential supplement for maintaining the health and vitality of marine aquariums. This alkalinity-bearing component works in conjunction with ReefCode A to provide calcium and carbonates in a ratio that closely mirrors natural seawater, ensuring optimal conditions for reef-building organisms such as corals, clams, and calcareous algae. By simplifying calcium and alkalinity maintenance, ReefCode B-P is an economical choice for both small and large aquarium setups. It is formulated without phosphate, silicate, or organic material to minimize unwanted contaminants that can harm the delicate balance of a marine ecosystem.