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the <div>Experienced aquarist checks the water in your marine aquarium regularly. The only way to eliminate problems before they become dangerous to susceptible animals. sera Aqua-test box marin contains the following test to determine:</div>

the <div>
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</div>

the <div>
the <ul>
the <li>pH level</li>

the <li>carbonate hardness (KH)</li>

the <li>ammonium/ammonia (NH4/NH3)</li>

the <li>nitrite (NO2)</li>

the <li>nitrate (NO3)</li>

the <li>phosphate (PO4)</li>

the <li>content of copper (Cu)</li>

the <li>level of calcium (Ca)</li>
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