What precautions do I need to take?

Before installation or maintenance, or before putting your hands into the aquarium, remove the power supply from all the electrical devices under water. Read the instructions.

Before installation

Check that all the components of the product are undamaged, disconnect all the electrical devices and make sure the voltage of the product corresponds to the mains voltage.

What is the purpose of the product?

This is an aquarium pump for internal use only, with water of a temperature of up to 35°C (95°F).

Do I have to be careful with the ultra-powerful rare-earth magnets?

Absolutely. In addition to the risk of catching your fingers because of the high level of magnetic pull between the two parts of the support, these parts may attract blades, sharp objects or other magnets, causing accidental injury. Magnets can also cause permanent damage to electronic equipment (e.g. LCD screens) and other objects sensitive to magnetic fields, such as heart pacemakers, credit cards and keys. Always keep a distance of at least 30 cm (12 inches), and always keep out of the reach of children.

Is it true that some marine species can damage the electrical cable?

Yes. Sea urchins, triggerfish and other fish with strong jaws can damage or consume electrical cables. This is why the product comes with a plastic cable protector.

What thickness of glass can the magnetic support of the Koralia EVO be used on?

Up to 15 mm (0.6 inches)

What maintenance operations does the Koralia EVO pump require?

Maintenance consists of cleaning the motor and the rotor, and if necessary removing the limescale that normally builds up in reef aquariums.

I feel it's a shame to remove the calcareous algae from the pump…

Attractive as they may be to look at, limestone formations on the pump can affect performance, and can cause the impeller to malfunction, with start-up of the rotor in the wrong direction. Problems with the impeller wearing out have also been reported as a result of continuous contact with this kind of limestone formations.

What kind of "decalcification" product should I use?

NEVER use chemical products for ovens, cookers or washing machines! Use only vinegar or lemon juice, or muriatic acid, with particular caution.

My aquarium is some distance from the plug socket. How long are the power supply cables?

2.4 metres, except for North America, where they are 6 feet long (approx. 2 metres).

My Koralia is clean, but it starts up in the wrong direction.

Check that the black starter rubber is in its place, in the front chamber of the pump.

My Koralia EVO is perfectly clean and starts up without any problem, but it vibrates and is noisy.

Check that the front chamber of the pump is positioned correctly and properly fixed. If it is, clean the pump thoroughly.

How should I schedule maintenance operations?

Maintenance operations should be carried out with the following frequency: A) Once a month for the rotor, inner pump body, bushings and O-ring: B) once every three months for the grids on the upper and lower chambers.

I want to recreate the effect of the waves in my reef aquarium. Can I set a timer on my Koralia EVO?

Certainly. For this purpose, Hydor has developed Smart Wave Controller, a special instrument for setting a timer on the Koralia pumps, from 5 seconds to 6 hours.