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From nature for nature

IQ Water - Sustainable water treatment & improvement of water quality

Natural Growth - improving the soil and vitalizing the plants

Vital - vitalizing supplementary feed for animals on a purely natural basis

Biogas - the right biology to optimize your biogas plant

Multimicroorganisms

Natural pioneers and companions in agriculture

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Sustainability is a good thing. But in many cases sustainability is just an empty phrase. So wouldn't it be even better if the products we work with on and in our natural world were really sustainable, resource-saving and characterized by a long service life? We offer you truly sustainable and future-oriented solutions in the areas of water treatment, soil and plant strengthening, animal food supplements and biogas plant optimization that ensure your long-term success for the benefit of nature, your health and your finances.


Save time & money

increase sales

Strengthen nature

Promote health


Did you know, ...


...that our planet has a water surface of approximately 361 million square kilometers?

Approximately 71 percent of the Earth's surface is covered with water. Of this, 97 percent is salt water and only three percent (= approx. 48 million cubic meters) is fresh water. About 66 percent of it is bound as ice in the Arctic Circle and high mountains. Around 17 percent is in groundwater and soil moisture. About 0.35 percent of fresh water flows in rivers and lakes.
The remaining eight percent, i.e. only three percent of the total amount of water on earth, is accessible to humans and animals as drinking water. Drinking water reserves are not evenly distributed throughout the world. ...

.... that it is not certain how long the substances used in agriculture last in the soil?

It can be assumed that the substances used remain in the soil for years. In addition, the understanding of symptom-related treatment is also widespread in agriculture. There are products for specific diseases tailored to different cultures. A large number of these products certainly impress with their short-term help. In the long term, however, these products upset the balance in nature between plants and soil.

We take a different approach: helping plants and soil help themselves. Read more...



...that a healthy intestine protects against illness in domestic, farm and sporting animals, as well as in humans?

In many animals and humans, the intestine, like the brain, is an important control center in the organism that is often underestimated. An imbalanced gut causes stress and illness.
With our products we strengthen the animal intestines in a natural way. Vital has a preventive and reactive supportive effect in the event of illness, so that your pet can get fit again quickly.

.... that with the right biology in the fermenter you can significantly increase the efficiency of your system?

Things are not going well in many biogas plants: poor gas quality, residence times that are too long, high internal energy consumption... In contrast to other providers who permanently bind their customers because the products only help in the short term, we are taking a different approach here too .

From nature, for nature. By adding the product once, you support the fermenter biology in the methanation of the biomass particularly effectively and in the long term.




This is what our customers and partners say...


Sustainability is the program here.


“I am an agricultural engineer with more than 50 years of professional experience and see my job as supporting agricultural businesses in building the soil fertility of their soils. What is particularly important to me is the reduction and, if possible, the elimination of pesticides. For this reason, I and like-minded colleagues tested and examined alternative cultivation methods and products, many of which had a good effect, others not so much. The IQ Water System and Natural Growth from WTZ GmbH, among others, have proven to be particularly effective, efficient, sustainable and easy to use. We were able to achieve savings of between 25 and up to 70% of the usual expenditure on herbicides and fungicides with 100% effectiveness.”
Christoph Felgentreu, board member of the Healthy Soil Interest Group

Healthy animals, good milk


“We run a farm with a focus on dairy farming and arable farming, and we pay particular attention to the welfare of the animals and soil fertility. We value products that promote harmony between animals, people and the environment. That's why we installed the IQ-Water device on our farm 4 years ago. The IQ Water system has become a crucial factor in our success. By using the device, our milk production has increased, the ingredients in our milk have improved, the cell counts have decreased, our animals are more vital, the cows' drinking water stays clean for longer, and the amount of concentrated feed used has been reduced. In short, the system has improved a lot quickly amortized and ensured profit.”
Matrin Noelker, Jost-Heinrich Grothaus / Milchhof Kilver

A product that does what it promises.


“Anyone who is a farmer in livestock or arable farming these days knows this: representatives come by almost every day who want to sell you THE BEST product or THE BEST solution for one of our daily challenges. From experience, however, only a fraction of the products deliver what they promise. When I was introduced to the IQ Water device a few months ago, all I initially thought was: another one of those. During the conversation with Mr. Zumbusch, he was able to convince me with his clear explanations and I decided to install the device. I could see changes from the first day, even though we started the test at an inopportune time and we had just switched feed to fresh corn silage. I noticed that the cow dung became significantly more homogeneous in the first few days and that subsequently the milk production increased, I was able to significantly reduce the use of concentrated feed (from 9 kg to 6 kg of spent grain), the cell numbers in the milk decreased, and the ingredients in the milk improved we had significantly fewer cases of illness and the cows no longer licked up their manure. Although I thought that I had already fully exploited my potential, I was convinced otherwise. The system paid off in the 8-week test. I am now convinced that the longer we use the system, the more I will notice.”
Dairy farmer with 450 cows (customer does not want to be named publicly.)

Healthy animals, healthy soil


“As the owner of a dairy farm, the welfare of the animals is very important to me. With an eye for the big picture, we only use products that promote harmony between the environment, animals and people. Since we started using IQ-Water, we have observed positive effects in terms of animal health, among other things. We have been using Natural Growth in corn as a seed treatment for about four years at a dosage of approximately 800 ml per 50,000 grains. We mix the whole thing with a concrete mixer. We spray the leaves in the following stages: 1-2 leaf and 4-6 leaf stages and shortly before the end of the row with 300 l of IQ-Water and 2.5 l of Natural Growth in the evening hours. We observed: larger root mass, strengthening of the seedling against pests, better leaf health, increase in drought tolerance, higher protein content in the silage, better nutrient utilization and yield assurance. After we had many positive experiences with Natural Growth in corn, we are now also using it on our grassland.”
Johann Alpers, partner of Alpers/Brinckmann GbR from Fredenbeck

Health through water.


“I have been receiving medical treatment for my prostate disease for years. All interim examinations showed no tumor formation. I dealt with the topic of water treatment early on and installed an Austrian system in 2004. Unfortunately, the values have continued to rise, albeit slowly. On November 13th, 2018 a PSA value of 31.93ng/ml was determined. A pet examination was then carried out in Bremen. The findings were devastating. Three prostate cancers were diagnosed. After consulting with Mr. Zumbusch, the water system was immediately changed and 1 IQ water system was installed. The PSA values then showed the following positive development: 02/07/19 - 25.38ng/ml, 03/12/19 - 28.89ng/ml, 04/25/19 - 24.13ng/ml, 06/11/19 - 22.17ng/ml, 09/05. 19 - 23.03ng/ml, 10/29/19 - 24.38ng/ml 06/04/20 - 20.16ng/ml, 08/20/20 - 18.73ng/ml, 11/17/20 - 20.58ng/ml 04/27/21 - 16.53ng/ml"
Heino Winneburg

Think outside the box.


“We turned our hobby into a profession many years ago. We love animals and especially horses. However, we find it strange how many different animal products come onto the market for different symptoms. In most cases the answer is simple: a healthy (animal) intestine ensures a healthy (animal) body. A few years ago, with the natural products Harmonie and Vital from WTZ GmbH, we found exactly the solution that suits the animals. Our horses are vital and harmonious horses with a very stable state of health. It can be so easy if you’re willing to open up.”
Stefanie and Udo Laube, owners of the Laube riding stable

Better cleaning, better taste and significant savings with IQ-Water.


“We installed the IQ-Water device at the end of June 2020. A short time later, a greatly improved cleaning effect in the household (dry pizza tray) and a fresher taste of the Sodastream water were noticed. In the dairy herd the cell numbers have increased from 140,000 to 240,000. After about six weeks, the old level was reached again and the trend shows a further improvement in cell numbers. We were able to determine probably the most clearly measurable effect when applying herbicides to second crop maize, winter barley and winter wheat. We sprayed each case with only 30% of the recommended amount - with good results even on black-grass!"
Jörn Lindena
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