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Finally. No chlorine. No tears.

The pH value is important for every disinfection method, including UV ionizers. The ideal pH value is 6.8. A pH value above 7.0 would result in the biocidal ions necessary for disinfection being transformed and losing their effect. It can also cause the water to become milky and cloudy.

That is why UVION offers pH dosing for its UV ionizers, which independently measures the pH value and regulates it accordingly.

The filtration time depends on the size of your pool and the circulation pump used. Basically, the pool water should be passed through the filter three times a day.
This means, for example, for a pool with a volume of 30 m³ and a circulation pump with a flow rate of 10 m³/h, that the pool needs 3 hours to be completely circulated once (30m³ : 10m³/h = 3h). This result times 3 (3h * 3 = 9h) corresponds to an ideal filtration time of 9 hours per day.
The intelligent pump control integrated in the UV ionizers allows 3 freely selectable filtration cycles, which can be adapted to your own needs.

Yes. The heat pump should be integrated after the UV ionizer and before the pool. This is important so that the water heated by the heat pump does not affect the temperature sensor of the UV ionizer.

Turbidity is caused by more or less small dirt particles. These cannot be absorbed by your filter media due to their size. To increase the size of the dirt particles, please add a flocculant to the water. The corresponding dosage can be found in the supplementary sheet of the flocculant. The flocculant binds the small dirt particles into flakes, which are discharged in the filtration process.

In the COMFORT generation of instruments, ionization is self-regulating via the concentration of ions determined by the measuring cell and no overdosing occurs.

For the ECO device generation, please proceed as follows.

Lower the ionizing current in the UV ionizer settings. The ion content slowly decreases again.

If you want to lower the concentration quickly then please exchange some pool water for fresh water.

The ion concentration is below the set point. The disinfection effect is insufficient and the water may turn green due to algae growth. Increase the ionizing current in the UV ionizer settings.

At the next maintenance appointment, check the ion concentration and increase or decrease the ionizing power according to the display. After a certain period of time, this value will stabilize and the correct ionizing power is found.

The ionizing current does not build up sufficiently. Here the reason may lie in the conductance of the water. If this is too low, not enough voltage builds up between the electrodes and no sufficient ionizing current can flow. A handful of table salt can help.

Another reason may be a coating on the electrodes. Make a visual inspection and remove this coating with commercial vinegar.

Blue salt formation, suggests a too high pH value, from 7.0 hydroxide complexes are formed, which precipitate in this color. By lowering the pH value, these gradually dissolve and the tension can build up again more easily.

To prepare the pool for winter, it is sufficient to set the ionizing current to the maximum value before switching off the system, in order to increase the ion concentration in the water, so that there is a certain buffer in the water. In addition, a wintering agent can be added to the water. After shutting down the equipment, please drain the UV ionizer to prevent damage from frozen water.

If a concrete swimming pool with PVC foil was not built according to the regulations, i.e. a fungicidal protective fleece and an insulating PE separating foil were not used under the foil, mold can form behind the foil. These fungi then break through the foil in the pool and unsightly black spots appear. When chlorine is used, the chlorine atoms also penetrate through the film and inhibit the formation of the fungi. However, this still shortens the life of the film. Therefore, when building a pool, we strongly recommend to have such a protective fleece installed and to use a bottom protection foil made of polyethylene (PE) as an additional separating layer. (see e.g. Assembly instructions at https://www.poolfolien123.de/Einbauanleitung-Poolfolien-Schwimmbadfolien). The biocidal ions prevent the formation of algae, and pathogens in the pool water, but do not penetrate the liner and therefore cannot kill the mold behind it. Since the UV ionizer works on the basis of ionization, we do not recommend using it in a foil pool that has not been properly constructed.

If black or dark spots appear on the bottom of the pool, shock chlorination will help. However, this only prevents the re-growth of the mold behind the film for a certain period of time.