• Seachem Reef Builder 300 g container dry alkalinity and pH buffer for reef aquariums
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Seachem Reef Builder 300 g

Seachem Reef Builder 300 g

Seachem Reef Builder is a powerful alkalinity and pH buffer designed specifically for reef and marine aquariums. It safely raises carbonate hardness (KH) and stabilizes pH, creating the optimal environment for coral skeletal growth, coralline algae development, and overall reef stability.

Unlike general marine buffers, Reef Builder is formulated to avoid ionic imbalance and works well alongside calcium and magnesium supplementation in SPS, LPS, and mixed reef systems.

The 300 g container is ideal for medium to large reef aquariums or reef keepers who prefer dry, highly concentrated buffering products.

Raises Alkalinity & pH Strong Buffering Capacity Reef-Safe Formula

Key Benefits

⚖️ Raises & Maintains Alkalinity (KH)
🪸 Supports Coral Skeleton & Coralline Algae Growth
🧪 Stabilizes Reef pH
Designed Specifically for Reef Aquariums
🐠 Safe for Fish, Corals & Invertebrates
📦 Highly Concentrated Dry Formula

⚙️ Product Details

  • Brand: Seachem
  • Product Name: Reef Builder
  • Size: 300 g
  • Supplement Type: Alkalinity / pH buffer
  • Aquarium Type: Saltwater / Reef
  • Form: Dry powder
  • Best For:
  • SPS-dominant systems
  • Mixed reef aquariums
  • Alkalinity correction & maintenance

💡 Dosing Guidelines (Summary)

  • 1 teaspoon per 40 gallons raises alkalinity by approximately 1 meq/L (2.8 dKH)
  • Dissolve in freshwater before adding
  • Dose gradually and test alkalinity regularly

Avoid rapid alkalinity changesstability is key for coral health.

❓ FAQ Seachem Reef Builder

Q: What is Reef Builder used for?
A: It raises alkalinity (KH) and helps stabilize pH in reef aquariums.

Q: How is Reef Builder different from Reef Carbonate?
A: Reef Builder is a stronger dry buffer, while Reef Carbonate is a liquid supplement for finer adjustments.

Q: Is this safe for SPS corals?
A: Yeswhen dosed correctly and adjusted gradually.

Q: Can I overdose alkalinity?
A: Yesalways test and dose conservatively.

Q: Should this be used with calcium supplements?
A: Yesbalanced calcium, alkalinity, and magnesium are essential for reef health.

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