Seachem Reef Advantage Magnesium

12 reviews
Seachem Reef Advantage Magnesium helps top up the important levels of magnesium on your reef aquarium, giving your corals an essential element they need to grow and develop in a healthy manner. Ammonia free, this can really make a positive difference in your aquarium.

Products

  • Reef Advantage Magnesium 300g Christmas Sale
    code: 636 In stock Only 1 left in stock
    £7.64
    £11.99
  • Reef Advantage Magnesium 600g Christmas Sale
    code: 633 In stock Only 2 left in stock
    £11.09
    £16.99
  • Reef Advantage Magnesium 1.2kg Christmas Sale
    code: 637 In stock Only 2 left in stock
    £15.29
    £23.49
  • Reef Advantage Magnesium 2.2kg
    code: 638 Available (Usually delivered in 4 days)
    £26.77
    £36.99
  • Reef Advantage Magnesium 4kg
    code: 639 Available (Usually delivered in 5 days)
    £49.29
    £64.99

Product Information

Seachem Reef Advantage Magnesium is a concentrated (80,000 ppm) optimised blend of magnesium, chloride, and sulphate salts designed to restore depleted levels of magnesium with minimal impact to the ionic ratios found in natural sea water.

If depleted these levels can affect pH and calcium levels. So, it's important to regualte the amount of magnesium. Seachem's Reef Advantage Magnesium will ensure that corals and other organisms have just the right amount for healthy balance and growth.

Unlike many other magnesium supplements, it doesn't contain ammonia. So you can be confident of both great water quality and fish health. 

Dosage:

  • 300g treats 4,800 Litres / 1,055.9 gallons
  • 600g treats 9,600 Litres / 2,112 gallons
  • 1.2kg treats 19,200 Litres / 4,223 gallons
  • 2kg treats 32,000 Litres / 7,039 gallons
  • 4kg treats 64,000 Litres / 14,078 gallons

Directions: Use 5g (one level teaspoon) per 80 litres / 17.6 gallons, twice a week. Dissolve in at least 250ml of freshwater.

Latest Customer Reviews

  • Rating
    Date 30/08/2016 12:08pm
    Seachem Reef Advantage Magnesium 300g
    Feefo Logo
    Excellent
  • Rating
    Date 26/08/2016 01:08am
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    Seachem quality as always
  • Rating
    Date 26/01/2016 16:01pm
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    I have no way of comparing with other equivalent products so not in a position to say excellent.
  • Rating
    Date 22/01/2015 17:01pm
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    Can't say much yet as I've only just started to use it.
  • Rating
    Date 21/02/2015 10:02am
    Seachem Reef Advantage Magnesium 4kg
    Feefo Logo
    Good
  • Rating
    Date 20/05/2016 07:05am
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    Essential item for any serious aquarist (not much to say except it mixes well)
  • Rating
    Date 16/04/2015 17:04pm
    Seachem Reef Advantage Magnesium 2kg
    Feefo Logo
    Excellent
  • Rating
    Date 14/11/2014 19:11pm
    Seachem Reef Advantage Magnesium 4kg
    Feefo Logo
    I've used this product before and liked it, but this particular pack was damp, so the chrystals had clumped together into a lump.
  • Rating
    Date 13/09/2016 08:09am
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    Simple to use....erring on the side of caution.
  • Rating
    Date 12/10/2016 09:10am
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    As above !!!!!!!!!!!!!!!!!!!!
  • Rating
    Date 10/01/2015 09:01am
    Seachem Reef Advantage Magnesium 600g
    Feefo Logo
    Does what its meant to.
  • Rating
    Date 09/03/2015 21:03pm
    Seachem Reef Advantage Magnesium 300g
    Feefo Logo
    As Above