Following a fertiliser explosion at Highlands Farm on 24 July 2026, Coral Passion has stopped trading from the site. Our insurance claim with MSIG Europe is still ongoing, but despite our efforts it does not look promising, and the future of the business is uncertain. Thank you to everyone who has supported us. I am still available & working on aquarium installations and maintenance. For more information, please contact tony@coralpassion.co.uk.


Magnesium Marine Test Kit available at Coral Passion in Essex

Magnesium Marine Test Kit

Regular price
£22.99
Sale price
£22.99
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Accurate measurement of Magnesium in marine aquariums.

Red Sea’s user-friendly Magnesium titration test provides a quick and reliable measurement of Magnesium in your aquarium to an accuracy of either 50ppm or 100ppm according to your needs.

Kit includes easy to follow graphic instructions and conversion tables for immediate interpretation of results.

Red Sea Magnesiun Test Kit Includes 75 tests.

Red Sea Magnesium Test Kit Specifications:


Test Name Accuracy Range Test Type No. of test
Mg 100 ppm ∞ Titration 75
Mg 50 ppm ∞ Titration 38