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<div style="font-size: 16px;">Experienced aquarist checks the water in your aquarium regularly. This allows to take preventive measures against, for example, algae, quickly and easily, without the need for chemicals. sera Aqua-test box contains the following tests:</div>

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<li style="font-size: 16px;">pH level</li>

<li style="font-size: 16px;">the overall level of hardness (GH)</li>

<li style="font-size: 16px;">carbonate hardness (KH)</li>

<li style="font-size: 16px;">ammonium/ammonia (NH4/NH3)</li>

<li style="font-size: 16px;">nitrite (NO2)</li>

<li style="font-size: 16px;">nitrate (NO3)</li>

<li style="font-size: 16px;">phosphate (PO4)</li>

<li style="font-size: 16px;">the levels of iron (Fe), and</li>

<li style="font-size: 16px;">levels of copper (Cu) or chlorine (Cl)</li>
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