Brightwell Magnesion - 500ml As just one example

As just one example

with no preservatives

Unlike the natural reef environment

For best results

All the installation parts are included and a magnetic coupling allows you to easily mount or adjust the dual-sensor

Brightwell Magnesion - 500ml As just one exampleConcentrated Magnesium Supplement for All Marine Fish & Reef Aquaria Overview Highly concentrated ionic magnesium solution. Provides magnesium, which helps regulate the balance between calcium and carbonates in aquarium water, and is a component of aragonite, the mineral secreted by reef building organisms such as corals, clams, and their allies to form skeletal material. Stronger than most competing products. Contains no unwanted organic material