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The car roofs are yellow, the windows dusty and on the water surface floats a yellow-green film of flower pollen and insects. Take immediate action, using preventive or immediate measures to make sure it won’t lead to problems.

Many aquarium owners think that the general hardness represents the total of all minerals and the carbonate hardness only a part of it. Then how can the carbonate hardness sometimes be higher than the total of minerals?

Our 15 expeditions have taught us something new: In natural waters nitrogens (ammonium/ammonia, nitrite and nitrate) and phosphates are ALWAYS scarce and below the limit of detection. Only when humans have an influence on the natural water, can nitrogens and phosphates be found.

While the title of the well-known book series may suggest the opposite, these books are actually full of excellent explanations for complicated facts. And that’s exactly what we also want to try and do, because the subject of water test/water chemistry puts a lot of people off.

Instead of comparing the colour change of the water on a colour scale, a second measuring glass with the aquarium water is put on the colour field of the colour chart.

It’s a hard life for a pond: It is exposed to all weather conditions, it gets unwanted rainwater and it has to digest leaves, flower pollen and any particulate matter that enters.

It can affect every pond owner. But if you are careful you can avert problems before they occur. In the following article we would like to introduce you to the different types of algae you may meet in the garden pond:

Today I would like to give you an idea of what happens to koi in our dealers’ basins. Since our koi have just arrived half starved from Japan it is first the duty of our dealers to put the new arrivals in quarantine. First of all their general health is checked.

Here, for anyone who may have missed it or who wasn’t able to visit us there, is a short report of our successful trip to Japan.

I have talked about KH and pH with a lot of koi dealers, experts and professionals in the past few weeks.

People often ask me what I think about water testing when I am out on my rounds, because most of my contacts respect my opinion.

In the aquarium scene we often hear people talking about “accurate” and “inaccurate” tests. But mostly they mean a rougher or finer scaling of the output values.

The water in your aquarium is outstandingly significant because it is a life-giving element for fish and plants.

Is your pond clear – with no algae in sight? Perhaps you were just lucky or you have completed an algae treatment successfully. In either case there’s one thing you don’t need: algae!

Professional water analysis sounds very expensive. But the professional water testing in your aquarium or pond at home also works on a high level and above all it is simple and inexpensive.

The water level can drop by up to several centimetres a day. This means it has to be refilled once a week at the latest.

There has been plenty of heavy rainfall in Germany in the last few days. The ponds are full to the brim and the garden - and more - is under water.

We are constantly being asked by pond owners for advice about how to deal with the problem of algae carpets on the water surface.

The flowers are blooming and the allergy sufferers know it only too well: the pollen count! We can see the powdery yellow coating on our cars and on the forest paths. The pollen count and small leaves are floating through the air and reaching our ponds in huge amounts.

Many pond owners don’t realise this. That’s why they don’t react to algae growth until it’s too late. This is not only annoying, it makes it harder to achieve clear water for your dream landscape.

Pond owners need to start preparing their ponds in autumn for the coming winter. Only by doing this can you be sure that your pond will continue to bring you pleasure next year and that your fish will be healthy.

As a pond owner in autumn you not only have to deal with getting the pond ready for winter, you also have to struggle with heavy and frequent rainfalls.

It’s getting cold slowly and the pond season is coming to its end. The leaves of the water lilies are dying and the sunshine hours are getting shorter. But in the pond there is still a lot happening. We will show you how to make your pond fit for the winter.

It happens every year. The algae arrive. What can you do to prevent it? For a healthy basis the pond needs to be filled with sufficient plant mass. This applies to ALL ponds.

In the garden pond the pH rises to over 10 if the carbonate hardness is insufficient or non-existent. In unbuffered ponds the pH level can even fluctuate up to 4 pH value levels within one day.

The care of your garden pond depends on the season. In spring you have other jobs than in autumn. But what needs doing in summer?