Seachem Acid Buffer™ – Safe pH Control for Planted & Hard Water Aquariums

Easily lower and stabilize your aquarium’s pH without the risk of algae or cloudy water.
Seachem Acid Buffer™ is a reliable solution for creating the ideal environment for your fish and plants — especially in hard water setups.

Key Features:

• Safely lowers pH without using phosphates (reduces algae risk)
• Helps maintain stable, balanced water conditions
• Ideal for planted aquariums and sensitive fish species
• Converts KH into usable CO₂ — supporting healthier plant growth
• Works in combination with Alkaline Buffer™ for precise pH control

Unstable or high pH levels can stress fish, affect plant growth, and lead to ongoing water issues. Using the right buffer helps you maintain a consistent, healthy environment — which means less stress for your livestock and a more balanced aquarium overall.

Acid Buffer™ lowers pH by converting carbonate hardness (KH) into CO₂, making it available for plant use. When used together with Alkaline Buffer™, you can accurately set and maintain a pH range between 6.0 and 8.0.

If you're serious about water stability and plant health, Acid Buffer™ is an essential tool for fine-tuning your aquarium conditions with confidence.

Product information:

• Non-phosphate formula
• Designed for freshwater aquariums
• Compatible with Seachem Alkaline Buffer™