Seachem Alkaline Buffer


SKU: ALE7452107047140 Category: Tag:


Seachem Alkaline Buffer raises the pH and alkalinity (KH) of your aquarium water and holds it steady between 7.2 and 8.5 – an ideal range for most freshwater environments. Alkaline Buffer is safe, gentle, and phosphate-free to reduce the risk of algae or cloudiness.

  • Raises pH and increases alkalinity
  • Buffers pH between 7.2 and 8.5
  • Great for planted aquariums or very hard water

Seachem Alkaline Buffer is a sodium bicarbonate-based buffer. This makes it slightly less stable than phosphate buffers, but better suited for planted aquariums where adding more phosphates would lead to an algae problem.

300 grams (10.5 oz): Treats 860 Gallons
600 grams (1.3 lbs): Treats 1,720 Gallons
1.2 kg (2.6 lbs): Treats 3,440 Gallons
4 kg (8.8 lbs): Treats 11,640 Gallons

Directions: To increase pH, use 1 teaspoon (7g) for every 80 L (20 gallons) daily until the desired pH is reached (this dose raises alkalinity by about 1 meq/L (2.8 dKH)). For precise dosing, use the Seachem Digital Spoon Scale. In order to adjust pH gradually, use Alkaline Buffer with Acid Buffer.


  • Q: What is the difference between Neutral Regulator, Discus Buffer, Alkaline Buffer, and Acid Buffer?
    A: Neutral Regulator and Discus Buffer are phosphate-based buffers providing a very strong and stable buffering system. Alkaline Buffer and Acid Buffer are non-phosphate buffers, which although less stable than a phosphate buffer, are ideal for the planted aquarium where high phosphate levels would lead to an algae problem.
  • Q: Is Alkaline Buffer a sodium bicarbonate?
    A: Yes, it is a sodium bicarbonate-based buffer.

Additional information