Light filter SpektroSorp

The photosynthesis carried out by algae and cyanobacteria (blue algae) is used for energy generation and the formation of storage media. Photosynthetically active pigments such as chlorophyll play a central role here and make the organisms appear green or bluish.

In the wavelength ranges of 480 nm and 670 nm of the visible light spectrum, the efficiency of the energy production of the algae is greatest. These two wavelengths form the maximum absorption spectrum for the coloring chlorophyll molecules a and b.


The Söll action principle SpektroSorp can be compared with that of a pair of sunglasses: with the help of a dye it weakens the wavelength ranges important for algae in the water. As a result, the metabolism of the algae no longer works optimally and they can be inhibited in growth.

We use this intelligent photosynthesis blocker in some liquid Söll algae products and thus intensify their effects.

Operating principle of SpektroSorp:


The SpektroSorp principle of action can be illustrated by means of a prism: the prism splits the sunlight into its individual wavelengths. SpektroSorp filters certain areas that are important for algae growth. These wavelengths, coloured black in our graphic, can no longer be accessed by the algae.

Good to know: SpektroSorp is UV resistant and does not damage any aquatic organisms.

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