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Marine - Buffer Powder

Buffer powder

pH Buffer & KH Booster

Why? Marine organisms consistently release ammonia into the water, which is converted into nitrate by the bacteria in the biological filter. These nitrates tend to form acids, and results in continual acidification of the water.

Seawater contains an alkalinity reserve buffer system, known as the carbonate hardness or KH, which compensates for this increase of acid to maintain a constant pH. Over time, the available KH falls. If the KH is at a very low level, this will result in pH fluctuations and, potentially, a pH crash which can kill all the fish and invertebrates in the aquarium.

In order to avoid this pH crash, it is essential to keep the KH level high.

What? Marine Buffer Powder replenishes the buffer in the aquarium water, increasing the KH level and ensuring that the pH remains stable.

When? Test the KH of the water at least once a week and add a dose of Buffer Powder when the KH falls to 6 odH. Ideally, keep the KH above 10 odH. This is the most important safety check you can make on your system.

Caution: Never let the KH fall below 3 odH or you could experience a pH crash and potentially lose all your fish.

Best used in conjunction with Filter Media Bags.

Test your water using Marine Lab Test Kits.



Available in the following variations:


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Let us calculate your dosage for you!

To make the process of using our products even easier this handy dosage calculator tells you the amount you will need to put into your system. Please ensure you also read the instructions and warnings that are written on the bottle/pack label.

Note: This calculator does not take into account water displacement such as that caused by substrate, ornaments, water features and plants etc. Therefore, please adjust the calculated volume accordingly.

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* Always follow the instructions on the label. This calculator is intended to be used only as a guide to how much product you need to buy to treat your system. It does not take account of displacement caused by gravel, rocks and ornaments etc and does not include the volume of any external filtration system. NT Laboratories Ltd. will not accept any responsibility for inaccuracies or misuse of this guide.