Brightwell Magnesion - 500ml As just one example

As just one example

75 in (19mm)

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Maintaining a correct magnesium concentration is therefore very important and is indirectly responsible for fast coral and calcareous algae growth by making it possible to maintain correct calcium and alkalinity figures

The DOS uses much larger tubing and fittings

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