Seachem Alkaline Buffer Aquarium Water Treatment
Adjusts pH to between 7.2 and 8.5, ideal for maintaining stable water conditions in planted aquariums.
Increases alkalinity without adding phosphate, helping to support healthy plant growth and reduce pH fluctuations.
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FAQ
Can this product be used in fish-only aquariums?
It is primarily designed for planted aquariums. Use with caution in fish-only setups, as pH adjustments may affect sensitive fish species.
How often should I add Seachem Alkaline Buffer?
Add according to your aquarium’s pH and alkalinity needs. Monitor water parameters regularly and adjust dosage as necessary.
Does it affect water hardness?
It increases alkalinity but does not significantly alter general hardness. Water hardness remains stable with proper use.

Caroline Lawrence –
Great for maintaining stable pH in my planted tank. The water stays balanced and my plants grow well without any signs of stress. No phosphate means it’s safe for fish too.
Caroline Lewis –
Works well in my 55-gallon tank. I added it once a month and noticed less pH swing. My anubias and java ferns are thriving. Slight adjustment needed after water changes.
Benjamin Forsyth –
I’ve used this for over a year and it’s been reliable. No phosphate is a big plus. My tank’s pH stays steady between 7.8 and 8.2, which is perfect for my plants.