Seachem Acid Buffer – pH Reducer & CO₂ Enhancer for Planted Aquariums (300g)

Seachem Acid Buffer – pH Conditioner & CO₂ Enhancer for Freshwater Aquariums (300g)

Seachem Acid Buffer is a specialized, phosphate-free buffer that safely lowers pH and converts carbonate alkalinity (KH) into available carbon dioxide (CO₂)—a vital nutrient for aquatic plants. It is designed for use in planted aquariums or in very hard water where phosphate buffers may cause algae or cloudiness.

When used in combination with Seachem Alkaline Buffer™, it allows precise control of pH between 5.0 and 8.0. This makes it ideal for aquarists who want to maintain stable, slightly acidic conditions for soft water species or to optimize CO₂ levels for plant growth.

Key Features:

• Non-phosphate buffer – prevents algae blooms
• Converts KH into available CO₂ for plants
• Buffers pH between 5.0 and 8.0 when used with Alkaline Buffer™
• Safe for all freshwater fish, shrimp, and plants
• Ideal for planted tanks, discus, and soft water biotopes

Product Specifications:

• Brand: Seachem
• Weight: 300g
• Form: Powder
• Active Ingredient: Sulfate-based acid buffer (phosphate-free)
• Country of Origin: United States

Directions for Use:

• To lower pH: Use ¼ teaspoon (2g) per 80 L (20 US gallons) daily until desired pH is reached
• This dose lowers alkalinity by ~0.2 meq/L (0.6 dKH)
• For precise pH targeting, use in combination with Seachem Alkaline Buffer™
• Use Seachem Digital Spoon Scale for accurate dosing

Pro Tips:

• Use with RO/DI water for best results
• Monitor KH and pH regularly during adjustment
• Ideal for aquascapes with CO₂ injection and soft water species