Seachem Reef Buffer – Raise pH to 8.3
Seachem Reef Buffer is intended primarily for use in a reef system where the maintenance of a pH of 8.3 is often difficult. When used as directed, Reef Buffer will raise the pH of your system to 8.3 without fear of accidentally overshooting the pH to a dangerous level. Reef Buffer will also raise carbonate alkalinity.
Where carbonate alkalinity needs to be raised but pH is not a problem, Seachem’s ‘Reef Builder’ should be used instead.
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FAQ
Can Reef Buffer be used in a freshwater aquarium?
No, Reef Buffer is specifically formulated for marine reef systems and is not suitable for freshwater aquariums.
Does Reef Buffer affect water hardness or other parameters besides pH and alkalinity?
Reef Buffer primarily affects pH and carbonate alkalinity. It does not significantly alter water hardness or other major water parameters.
How often should Reef Buffer be added to the system?
The frequency depends on your system’s specific conditions. Follow the dosage instructions on the label and monitor pH and alkalinity regularly to determine the appropriate usage.

Abigail Randall –
This product helped stabilize my reef tank’s pH at 8.3, which was previously fluctuating. I noticed a steady improvement in coral health after a few weeks of consistent use. The alkalinity also increased as expected.
Keith Quinn –
I used Reef Buffer after experiencing pH drops during water changes. It worked well to bring the pH back to 8.3 without sudden spikes. I still monitor alkalinity closely to ensure balance.
Claire Skinner –
The instructions are clear and the product performs as described. My tank has maintained a stable pH for over two months now. Corals appear more vibrant and active.