GEH® Phostec

  • Chemical free swimming
  • Treatment of lakes and natural swimming pools
  • Nutrient elimination in outdoor pools and garden ponds

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High phosphate levels are a major problem for lakes, rivers and other natural waters.

Introduced as a constitute of the waste water, it functions as a fertiliser and results in the algae there growing quickly. The water body becomes eutrophic and the risk of the formation of “dead zones” increases. GEH® helps to maintain the natural balance in lakes by removing phosphate as a nutrient from the water. The treatment using GEH® is a low-energy and sustainable process.

GEH® Phostec Ultra was developed for the removal of phosphate from bathing lake water. It ensures crystal clear water in numerous projects around the world.



Good to know:

With GEH® and the adsorption process, phosphorus can be eliminated in a purely physical way – without a specific dosage of chemicals. Best of all: the process is scalable – so that small garden ponds can be treated just like large lakes with a capacity of over 600,000 m³.

GEH®: Your choice for phosphate removal and for algae-free surface waters

As a salt, phosphate is basically a nutrient. It is found in fertilizers, laundry and food. We as humans need phosphate for our body to function properly and as a basis to build DNA. An excess of phosphate would damage our bodies. The situation is similar with phosphate in nature: as a natural fertilizer, it ensures growth.

But: If there is too much of it, it suffocates life – literally. Because it accelerates the multiplication of phytoplankton, like algae in water. If the algae die and sink to the bottom, they are decomposed by microorganisms. This eutrophication gradually leads to a lack of oxygen that suffocates fish and other aquatic organisms. GEH® as a phosphate filter material counteracts this. The phosphate binding or phosphate removal is carried out by selective adsorption. This is an energy-free and sustainable process in which the nutrient phosphate is taken from the water.


GEH® phosphate water treatment – for water purification in outdoor pools and garden ponds

We humans also add phosphate to the water when bathing in lakes, natural swimming pools or swimming ponds. Through sun and nourishing creams on our skin, by feeding the fish and leaves that fall into the pond. Before eutrophication can take place, which is harmful to our health when swimming, GEH® ensures an effective phosphate removal.

GEH® for phosphate removal and more

Innovative adsorption media based on apatented formula

GEH® binds phosphate effectively and selectively. These properties emerge from its special chemical composition and its physical shape. These unique granules are therefore superior to competitor products when it comes to performance and reliance.


Phosphate removal and water protection: how to do it properly!

With GEH®, you get more than just a water treatment product from us. We advise you with our individual services for the optimal use of GEH® in your systems. We are happy to talk about possible increases in efficiency and optimizations that make a difference for you and the environment.


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