Fluval Sea Magnesium Supplement

4 reviews

This Fluval Sea Magnesium Supplement helps replenish the reduced magnesium levels in your reef aquarium, usually caused by the consumption by your coral reef.


  • Sea Magnesium Supplement 237ml 10% OFF With Code
    code: A8261 In stock Only 2 left in stock
  • Sea Magnesium Supplement 473ml 10% OFF With Code
    code: A8262 Out of stock (Notify me)

Product Information

Fluval Sea Magnesium Supplement is a concentrated magnesium boosting supplement specifically designed to elevate the levels of magnesium within the aquarium, without adversely effecting the delicate ionic balance within the water. It is especially useful for aquariums that regularly suffer from magnesium depletion, usually associated with by corals ands coralline algae.

It contains exceptionally pure magnesium chloride which is free from unwanted contaminants, such as nitrates, gluconates and phosphates and is also useful to support coral growth and ideal pH levels. Fluval Sea Magnesium Supplement treats up to 75 litres of water.

Key Features:

  • Concentrated magnesium supplement for regularly magnesium depleted aquariums with lots of corals
  • Free from unwanted contaminants
  • Does not effect delicate ionic balance of marine aquariums

Latest Customer Reviews

  • Rating
    Date 20/01/2016 11:01am
    Fluval Sea Magnesium Supplement 473ml
    Feefo Logo
    a good supliment. clear instrauctions
  • Rating
    Date 11/06/2017 08:06am
    Fluval Sea Magnesium Supplement 473ml
    Feefo Logo
    Used regularly as part of weekly maintenance
  • Rating
    Date 02/09/2017 12:09pm
    Fluval Sea Magnesium Supplement 473ml
    Feefo Logo
    Good price and easy to use supplement
  • Rating
    Date 02/02/2017 07:02am
    Fluval Sea Magnesium Supplement 237ml
    Feefo Logo
    Use fluval sea products all the time. No problems,Excellent.