Reef Fusion 2

Maintain stable alkalinity and support overall reef stability with Seachem Reef Fusion 2. This is a concentrated alkalinity supplement designed for reef aquariums.

Reef Fusion 2 provides carbonate alkalinity (KH), which plays a critical role in maintaining stable pH and supporting coral structure. When used alongside Reef Fusion 1, it helps create a balanced system for consistent reef parameters and long-term coral health.

How It Works 

Alkalinity (KH) is essential for:

• Stabilizing pH
• Supporting coral skeletal growth
• Maintaining overall reef balance

Reef Fusion 2 works by:

• Raising carbonate alkalinity
• Supporting stable pH levels
• Complementing calcium dosing

Result: A more stable and balanced reef environment

IMPORTANT: Proper Use

Reef Fusion 2 is part of a two part dosing system and should not be used incorrectly.

Best Practice

• Use with Reef Fusion 1 for balanced dosing
• Dose separately (never mix before adding)
• Test alkalinity (KH) regularly

What to avoid

• Do NOT mix with Reef Fusion 1 before dosing
• Do NOT dose without testing
• Do NOT make large corrections at once

Improper use can:

• Spike alkalinity
• Stress corals
• Cause instability in your tank

What It Helps With

• Low alkalinity (KH) levels
• pH stability
• Supporting coral growth
• Maintaining reef parameter balance

Why It Matters

Alkalinity is one of the most important parameters in a reef tank.
Without stable KH levels, pH can fluctuate and coral health can decline.

Perfect For

• Reef aquariums (LPS, SPS, mixed reefs)
• Hobbyists managing alkalinity
• Balanced dosing systems

How to Use

Add as directed to raise and maintain alkalinity levels.

Test before and after dosing
Adjust gradually for stability

Pro Tip

For best results, pair with:

• Reef Fusion 1
• KH (alkalinity) test kit
• Calcium testing
• Save when purchasing together with the Fusion 1 & Fusion 2 Bundle 

 Balanced dosing = long term reef success