SEACHEM ACID BUFFER 600GM
Acid Buffer is a non-phosphate buffer designed to lower pH and stabilize water conditions in planted aquariums or in very hard water systems where phosphate-based buffers may cause algae growth or water cloudiness.
When used in combination with Alkaline Buffer, Acid Buffer effectively lowers pH and maintains a stable range between 5.0 and 8.0. It converts carbonate alkalinity (KH) into available CO2 during the process, which supports plant health in planted tanks.
Acid Buffer is also suitable for safely reducing pH in marine aquariums where precise pH control is essential.
| Specification | Value |
|---|---|
| Form | Clear liquid |
| Volume | 600g |
| Use | Planted aquariums, hard water systems, marine water pH adjustment |
| Buffer Range | 5.0 to 8.0 (with Alkaline Buffer) |
| Phosphate Content | None |
FAQ
Can Acid Buffer be used in a marine aquarium?
Yes, Acid Buffer may be used to safely lower pH in marine water when used in combination with Alkaline Buffer.
Does Acid Buffer affect plant growth?
Acid Buffer helps maintain stable pH and provides available CO2, which supports plant growth in planted aquariums.
What is the recommended dosage for use with Alkaline Buffer?
Please contact customer service for specific dosage instructions based on tank size and water parameters.

Rachel Watson –
Used in a planted tank with hard water. The pH dropped smoothly without causing cloudiness. Plants stayed healthy and the water clarity improved after a few weeks. No algae issues observed.
William King –
Works well with Alkaline Buffer to maintain stable pH. The CO2 release helped my plants grow better. I didn’t notice any changes in alkalinity, which was a relief.
Adam Jones –
Great product for reducing pH safely. No phosphate buildup, which was a concern in my previous setup. Works reliably in a marine tank too, though I used it cautiously.