Algae in the pond

Everyone who builds a pond dreams of clear water with bright fish and lush green plants. In reality, this quickly turns into the opposite: the pond turns into a pond with green pond water in which fish can only be seen when they swim close to the surface and green pond water is the only green. The same situation arises with algae in the swimming pond, which is not only unattractive to look at, but also makes swimming in the pond unattractive. There are many different reasons for this, ranging from an unsuitable pH value to the amount of plants to fish stocking or fish food.

PONDS NEED INTENSIVE CARE

Creating a pond that maintains its own balance is very difficult, often expensive and requires intensive maintenance. This can be achieved by using special pond plants to combat algae or by cleaning the filters more frequently. The use of chemicals is prohibited from the outset, as these not only kill the garden pond algae, but also everything else. As most ponds do not have a permanent fresh water supply such as a stream, other methods must be used to ensure permanent mixing of the water and thus a sufficient supply of oxygen. A fountain is often used for this purpose, which has integrated filter pads and is sunk in the middle of the pond. Cleaning these filters is very laborious and time-consuming. The floating, blue or filamentous algae in the pond are not killed and continue to multiply, even if they are already in the filter.

EFFECTIVE POND CLEANING WITH UV-C LIGHT

An extremely effective way of preventing algae blooms right from the start is to use physical processes such as UV-C disinfection. Here, the water is pumped through a metal reactor in an external water circuit. Inside the reactor is a UV-C lamp that illuminates the water and dissolves DNA compounds in the cell nuclei of the algae. As a result, they are no longer able to reproduce or carry out internal processes. As a result, they are killed and no longer have any influence on the pond. If a suspended matter or sand filter is also placed upstream of this cycle, the dead algae material is filtered out of the water and the pond does not silt up. With this method, UV-C is used specifically where it is needed. There is no need to worry about damage to plants or fish; on the contrary, they now have optimum conditions in which to thrive. With the help of UV-C, the pond is cleaned in the long term and with little effort so that it fulfills all expectations of a clean pond.