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Seachem Reef Fusion 2 500 mL

Seachem Reef Fusion 2 is the alkalinity component of Seachem’s advanced two-part Reef Fusion system, designed to maintain stable carbonate alkalinity in reef aquariums. Proper alkalinity is critical for coral skeletal formation, pH stability, and overall reef health, especially in SPS- and LPS-dominated systems.

When used together with Reef Fusion 1 (Calcium), Reef Fusion 2 helps deliver balanced, complete supplementation without ionic imbalance.

The 500 mL bottle is ideal for medium to large reef aquariums and consistent dosing schedules.

Alkalinity Component Supports Coral Skeleton Growth Two-Part Reef System

Key Benefits

⚖️ Maintains Stable Alkalinity (KH)
🪸 Supports Coral Skeletal Growth & Structure
🧪 Optimized for SPS, LPS & Mixed Reefs
Designed for Reef & Marine Aquariums
🐠 Safe for Fish, Corals & Invertebrates
🔁 Best Used with Reef Fusion 1 (Calcium)

⚙️ Product Details

  • Brand: Seachem
  • Product Name: Reef Fusion 2
  • Size: 500 mL
  • Supplement Type: Alkalinity (Carbonate/Bicarbonate)
  • Aquarium Type: Saltwater / Reef
  • System: Two-part dosing (Part 2 Alkalinity)

💡 Dosing Guidelines (Summary)

  • 1 mL per 25 gallons raises alkalinity by approximately 0.5 dKH
  • Dose daily or as needed based on testing
  • Dose separately from calcium supplements

Always test alkalinity regularly and adjust dosing accordingly.

❓ FAQ Seachem Reef Fusion 2

Q: What is Reef Fusion 2 used for?
A: It supplies alkalinity needed for coral skeletal growth and pH stability.

Q: Do I need Reef Fusion 1 as well?
A: YesReef Fusion 1 (calcium) and Reef Fusion 2 work together as a balanced system.

Q: Is this safe for SPS corals?
A: Absolutely — widely used in SPS, LPS, and mixed reef aquariums.

Q: Can I overdose alkalinity?
A: Yes — always test and dose conservatively.

Q: Does this replace water changes?
A: No — it supplements alkalinity but does not replace water changes.


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