Your fish will like it too LAGUR

As LAGUR does not change the water chemistry, but preserves the natural composition of the water, is LAGUR suitable for homes with aquarium fish both inside and in a pond that needs to be supplied with fresh water with natural mineral content. But we would like to know more. You are very welcome to contribute in the comments to our exploration of the topic with your knowledge and your own experiences about water and fish.

In many homes, there are other living beings than just humans who enjoy clean water. We can enjoy it straight from the tap in Denmark.

Many people have pets, and dogs in particular happily slurp up fresh water when they are thirsty. But no pet is inherently as fundamentally dependent on water as fish.

Based on research and dialogue with customers who keep fish, we have created this article as an attempt to describe the relationship between LAGUR and fish behind glass or in a garden pond.

We would very much like to learn more about the subject and encourage everyone with knowledge about water and fish to contribute their experiences.

MANY WATER VALUES AFFECT EACH OTHER

In general, all aquarium fish that can be purchased in Danish pet stores can be kept in the aquarium with ordinary tap water. However, this requires that you control the temperature and other conditions that influence the water quality and the fish's living conditions.

As LAGUR does not change the water chemistry, but preserves the natural composition of the groundwater. Including the minerals that have been collected on the water's path through the soil layers, LAGUR also suitable for homes with aquarium fish.

There are many water values to keep track of when keeping fish. The most important are pH (acidity), dH/Kh (carbonate hardness), Gh (total water hardness, i.e. a measure of dissolved calcium and magnesium salts), No2 (nitrogen dioxide/nitrite), No3 (nitrate) and Nh4 (ammonium).

In addition, there is the well-known CO2 (carbon dioxide), which is a factor in outdoor pools and garden ponds. Here there will always be some degree of air and water pollution, as the oxidation and expulsion of CO2, ammonium and ammonia increases in step with the wind and the surface of the garden pond.

If you live in an area with acid rain, which shifts the pH values and thus causes instability in the chemical balance of the water, it requires a water exchange. If the exchange is made with water that has been treated in a conventional water softening plants , you are leaching out even more of the water's natural minerals.

There is also the factor that the more dirt that is added to the pond from air pollution and leaves, etc., the more nitrate is produced. Which may also necessitate replacing some water.

FOLLOW THE VALUES

You can monitor the different values of the water by using test sticks, but the challenge can be that these values largely influence each other. They each change individually, which is not least seen in connection with water changes, where the aquarium or pond is supplied with fresh water with different values.

Most fish species, even those from tropical rainforest areas, live fine in aquariums based on Danish groundwater that passes through a LAGUR -plant. Regardless of the hardness levels (lime content) that may exist in the relevant geographical area of Denmark.

WHEN FISH FARMING REQUIRES A SPECIAL ENVIRONMENT

More advanced aquarists who may want to breed fish may need to change the water parameters and soften the water to a lower hardness than the water received at home. This is because it requires a special environment of softer water to show the real behavior of the fish.

Aquarium fish keepers can make soft water in several ways. They can buy distilled water, use rainwater, or use an ion exchange system, either on the main water supply to the home or in the aquarium itself. For example, some keepers dilute tap water with rainwater and filter it over sphagnum to achieve the right values.

Immediately, water from a conventional water softening plants (seam LAGUR differs from by not increasing the sodium content of the water) is used. Unless it is set to remove too much limescale , as it is an important part of water changes that there is high dH and Kh in the water.

RAINWATER FLUSHS OUT THE MINERALS

But when it comes to fish in pools and garden ponds, you also have to take into account that some minerals, etc. are washed out via rainwater. Especially if you collect rainwater for the garden pond.

One LAGUR -customer says that due to the size and depth of his pond and the number of fish, he is vulnerable to rainwater. Therefore, he replaces some of the water after a rainy period with regular tap water as needed. This is especially important when it gets hot in the summer, to increase the Kh value and thus stabilize the CO2 and pH balance.

Did he have a conventional water softening plants , it would require a heavy addition of the minerals that a LAGUR -plants preserve by not changing the chemical composition of the water.

Especially in a garden pond, Co2, Kh and pH are inextricably linked, as Co2 and pH fluctuate together, so a drop in the pH value results in less oxygen and more Co2 in the water.

In this context, Kh acts as the stabilizing factor, and the more the better. Kh is diluted by rain, etc., and if you top up with natural tap water, the value stabilizes again.

LOW KH MAKES PH AND CO2 BALANCE UNSTABLE

At very low Kh, the pH and CO2 balance becomes so unstable that even a low pressure that increases the CO2 content in the water can trigger a pH drop. This will mean CO2 saturation and the fish will die within hours from lack of oxygen.

If you do not regularly measure Kh and dH in the garden pond and change the water purified by a conventional water treatment plant , it can end badly. Especially if it is a garden pond with koi carps and thus high load or, for example, sturgeon, which are very sensitive to oxygen deficiency.

In the Danish waterways there is a lot of dH and Kh due to all the stones in the waterways. Otherwise there wouldn't be many fish.

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