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A large proportion of ponds should have a filtration system. This is important if the ponds are used intensively. A filter is only unnecessary if there are no or few fish swimming in the pond, the pond consists largely of purifying plants and if the pond is located in the shade. It is essential that the pond be optimally filtered if there are many fish in it, but also if it is a swimming pond in which swimming is frequent. If waste products are not consistently removed from the water, this results in an unhealthy murky pond.
There are four main factors when choosing a filtration system:
- The size of the pond; larger ponds should have a larger filter.
- The frequency of fish in the pond; the more fish in the pond, the larger the filter should be.
- The number of purifying plants in the pond; plants relieve the filter by taking care of part of the water purification.
- The location of the pond; if a pond is mainly in the sun, the likelihood of algae formation is increased.
A drum filter is a completely automatic pre-filter. Water is led in through the inlet chamber, where it then enters a drum-shaped sieve. The drum is equipped with a filter mesh of, say, 60 microns. This means that particles of dirt larger than 0.06 millimeters cannot pass through the mesh. These particles stick to the inside of the drum, reducing the flow of water through the drum, resulting in a difference in water level both inside and outside the drum. This difference is sensed by the float switch, causing the controller to initiate the flushing process.
So the device regulates itself, according to the dirt, when the nozzles rinse the screen clean. The dirt is flushed into the drain. You can choose whether the nozzles rinse with clean pond water or tap water (minimum pressure 1 bar). The filtered water flows through the sieve and is returned to the main filter.
Mechanical filtration ensures that the coarser, suspended waste is filtered out of the water. In biological filtration, waste products from the pond are converted into harmless substances by beneficial bacteria.
Oxygen is a very important aspect for all living organisms in the pond. It is therefore very important to maintain oxygen levels to prevent both algae growth and the death of flora and fauna. A shortage of oxygen can be caused by:
- An increasing water temperature in the spring and summer months.
- Decomposing organic material found at the bottom of the pond, for example, feed and/or leaves.
- Plants and algae absorb oxygen from the water at night and then gradually give it back during the day. The oxygen shortage in therefore often greater in the morning.
An oxygen deficiency in your pond can be recognized by slow swimming fish, fish gasping for air or crowding each other in an oxygen-rich area. If you detect this, we recommend that you aerate your pond immediately. Ensure good water circulation at the water surface. This is possible using an air pump, waterfall, fountain or garden hose.
A green pond is the result of algae formation. There are two types of algae, filamentous algae and floating algae. Float algae are the cause of a green glow on the pond water. The water is no longer pure and a UV-C unit is therefore indispensable in every pond. The unit combats these impurities with the help of the pond pump, which pumps the water through the UV-C unit. The water thereby comes into contact with the UV-C radiation, which attacks the DNA structure of uni cellular microorganisms (including bacteria, algae and viruses). The microorganisms can no longer multiply, die and disappear from the pond water. This results in a pure clean pond without the addition of chemicals.
The right filtration system prevents a murky pond. There are several ways to filter the water. Mechanical filtration ensures that the coarser, suspended waste is filtered out of the water. In biological filtration, waste products from the pond are converted into harmless substances by beneficial bacteria. To prevent green water (caused by algae), it is recommended to use a UV-C lamp when filtering.
In general, Filtreau UV-C lights last at least 9,000 hours. After these hours, the operation of the lamp decreases. The exact operating time is indicated for each product.
UV-C equipment is the solution against green pond water and essential in every pond. It is an ecological technology that promotes water quality and ensures pure water without the addition of chemicals. In addition, UV-C protects the fauna (fish) from bacteria and/or germs.
The pond water is pumped through the UV-C unit by the pond pump, where it then comes into contact with UV-C radiation. This affects the DNA structure of uni cellular microorganisms in the pond. Examples include bacteria, algae and viruses. As a result, they can no longer multiply and disappear from the pond water, resulting in a clean pond.
The average lifespan of UV-C lamps is 9000 burning hours. When these hours have passed, the UV-C lamp still works, however, the desired effect is not achieved since the power of the radiation has decreased. For optimal operation, it is important that the UV-C lamp is replaced once a year. Amalgam lamps have a longer lifespan. They have an average of 12,000 burning hours.
The UV-C lamp is located in quartz glass. If deposits form on this glass, the UV-C lamp's optimum performance is reduced. Deposits are caused, for example, by algae or limescale. As a result, it is possible that the UV-C radiation cannot reach the water flowing past as well. It is therefore very important to keep the quartz glass clean by using a soft cloth to prevent scratches and a suitable cleaning agent.
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