Overview
Seachem Reef Builder 1kg is a premium alkalinity supplement that maintains and stabilizes carbonate hardness in reef aquariums. It raises KH without dramatically shifting pH, giving corals the building blocks they need for skeletal development and biological stability. Free of phosphates and nitrates, it helps prevent the pH swings that endanger marine life.
Key Features
- Increases and stabilizes carbonate hardness (KH)
- Raises alkalinity without abruptly changing pH
- Free from phosphates and nitrates
- Supports coral growth and skeletal development
- Enhances buffering capacity for a stable reef
- Dissolves easily for simple dosing
Specifications
| Brand | Seachem |
|---|---|
| UPC | 00116036702 |
About Seachem
Seachem is a respected manufacturer of aquarium supplements and water care products engineered for precise, reef-safe chemistry. Visit Seachem.
Frequently Asked Questions
Will Reef Builder raise my pH too much?
No. It is formulated to increase carbonate hardness without dramatically raising pH, keeping the reef environment stable.
Does it contain phosphates or nitrates?
No. Reef Builder is free from phosphates and nitrates, making it safe for a healthy marine system.


























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