Magnesium is a macro element which is extremely abundant in the reefs around the world.

It forms part of coral skeleton and other animals. It is involved in a variety of cellular processes like cell division, skeleton calcification and others.

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Magnesium interacts with calcium and impacts on calcium precipitation, making it harder to happen.  


Magnesium is a macro element that gets depleted from the water in our tanks fairly quickly. Therefore, it is important to dose Magnesium in a stable and constant way. Magnesium levels should be checked regularly and adjusted to ensure optimal levels i.e. between 1280-1440 mg/l.

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Magnesium Zlement used in conjunction with a regular testing procedure, allows any reefer to make corrections to Magnesium levels ensuring the levels in their tank water stay within the best range for their friends.

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10 ml of Magnesium Zlement increases the Magnesium concentration of 100 litres by 10 mg/l.

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1 Litre Bottle RRP - £14.99

Zlements magnesium 1 ltr

£14.99Price