Seachem Reef Buffer 500g – Reef pH & Alkalinity Stabiliser

Seachem Reef Buffer 500g is a professional-grade buffering supplement developed specifically for reef aquariums to safely raise and stabilise pH at the optimal reef level of 8.3. Unlike standard marine buffers that rely solely on sodium bicarbonate, Reef Buffer utilises a precise blend of carbonate and bicarbonate salts, ensuring controlled pH adjustment without the risk of overshooting.

With an effective buffering pK of approximately 8.6 in saltwater, Reef Buffer is engineered to counteract the strong acid production found in coral-dense reef systems. This higher buffering capacity provides superior pH stability compared to generic marine buffers, which often fail to reach or maintain proper reef pH levels. When used as directed, Reef Buffer also supports balanced alkalinity, promoting healthy coral growth and long-term reef stability.

Key Features:

• Safely raises reef aquarium pH to 8.3
• Reef-specific carbonate & bicarbonate formulation
• Higher buffering strength with pK ~8.6
• Prevents dangerous pH spikes
• Raises alkalinity in a controlled, predictable way
• Ideal for large and coral-heavy reef systems
• Designed for routine pH maintenance
• More effective than standard marine buffers

Seachem Reef Buffer 500g is an ideal choice for medium to large reef aquariums requiring consistent pH and alkalinity control. Its advanced formulation delivers reliable results where generic buffers fall short, helping maintain stable water chemistry and optimal conditions for coral health and growth.