You have no items in your basket.
Free Delivery
on orders over £49
on orders over £49
Use Aquarium Systems SeaTest - Magnesium (Mg) to gauge the levels of magnesium in your marine aquarium.
Magnesium is essential in a reef aquarium, as corals need it to support healthy, strong skeleton growth. As magnesium is naturally depleted from water, especially in densely packed aquariums, levels must be tested and restored accordingly. Aquarium Systems SeaTest - Magnesium is the ideal product for easily and simply checking your magnesium level.