Seachem Reef Fusion 1 and Reef Fusion 2

6 reviews

Seachem Reef Fusion 1 provides Calcium for the reef aquariums. It should be used with Reef Fusion 2 which provides alkalinity, helping to balance out the water to optimum levels to encourage healthy coral growth.


  • Reef Fusion 1 - 500ml Sale
    code: 1203 In stock Less than 10 in stock
  • Reef Fusion 2 - 500ml Sale
    code: 1213 In stock Less than 10 in stock

Product Information

Reef Fusion 1 is best used with Reef Fusion 2, together they maintain the calcium and alkalinity levels of your reef aquarium.

Reef Fusion 1 not only provides 100,000 mg/L of ionic calcium, but also includes the correct levels of magnesium, strontium, boron, iron, manganese, and molybdenum.

Reef Fusion 2 is designed to restore and maintain alkalinity in the reef aquarium and provide calcareous species with the essential carbonate needed for growth. So you can be confident of beautiful coral growth.

Used alone these products provide the best balance of essential elements within your aquarium, used together they will provide optimum results.

Please note that the Reef Fusion 1 and Reef Fusion 2 are ordered separately.


  • Dose aquarium every 1-2 days.
  • Shake well before using.
  • Add 1 mL of Reef Fusion 1 per 25 L (6.5 US gallons) of water. (For reference purposes, the cap holds 5 mL.)
  • Add this to a high current area of the tank.
  • Wait a few minutes, then add Reef Fusion 2 in the same manner, 1 mL per 25 L (6.5 US gallons), after shaking well.
  • It is preferred that the two products be added to separate locations in the tank. Never mix the two products directly.

This dose contributes 4 mg/L of calcium, and 0.176 meq/L of alkalinity.
Maintain calcium level between 410-430 mg/L. Maintain alkalinity between 4-6 meq/L. Size or frequency of dose may be increased if dosing regimen is insufficient to maintain calcium and alkalinity in these ranges.

Latest Customer Reviews

  • Rating
    Date 26/12/2018 15:12pm
    Seachem Reef Fusion 2 - 500ml
    Feefo Logo
    These are my goto dual part calcium and alkalinity.
  • Rating
    Date 25/08/2018 09:08am
    Seachem Reef Fusion 2 - 500ml
    Feefo Logo
    Great service. Well packaged and delivered quickly
  • Rating
    Date 10/08/2016 08:08am
    Seachem Reef Fusion 2 - 500ml
    Feefo Logo
  • Rating
    Date 02/03/2016 21:03pm
    Seachem Reef Fusion 2 - 500ml
    Feefo Logo
    As Above