ALKAREEF+ | Reef Aquarium Alkalinity | Prodibio

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ALKAREEF+ is a liquid solution that helps maintain alkalinity and pH at their optimum level in the reef aquarium by providing carbonate ions.


The pH is one of the essential parameters to monitor in a reef aquarium, indeed significant variations in its level are dangerous for the organisms that live there. In this environment, carbonate and hydrogen carbonate ions are mainly responsible for the overall alkalinity and, through their buffering power, contribute to limiting these undesirable pH variations.

However, carbonate and hydrogen carbonate ions are also used by calcifying species, such as corals and encrusting algae, to form the calcium carbonate of their rigid structures. It is therefore essential to add these ions on a regular basis in a reef aquarium.

ALKA REEF+ provides carbonate ions to maintain the alkalinity level of your aquarium at its optimum. It works in synergy with CALCI REEF+, calcium hydrogel with progressive release of hydrogen carbonate ions. The combination of these two products generates an ionic balance close to that of natural seawater.

ALKA REEF+ does not contain gluconates


It is important to regularly measure the alkalinity of your aquarium and readjust it between 2.5 and 4.0 meq/L (i.e. 125-200 ppm CaCO3 or 7.0-11.2 d°KH).

The quantity of ALKA REEF+ to be used must be adapted to each aquarium and cannot be generalized.

It is recommended to add 2 doses of ALKAREEF+ for 1 dose of CALCIREEF+.

Wait at least half an hour between adding ALKAREEF+ and CALCIREEF+.

Ready-to-use liquid solution. Shake vigorously before use.

To be poured into the flow of the current.


2 ml of ALKAREEF + contain 21 mg of carbonates and raise the Alkalinity by 1°KH for 10 L of water.

5 Star Reviews


I have been ordering Copepods for many years and I never notice any reaction from my fish or corals when I bought from other places not so buying from Pod Your Reef! The copepods were alive and well! You could even see some swimming around in the tank my mushroom corals went crazy! Highly recommend getting your copepods from here!

Nicholas B.