Is Spring Water Good For Fish Tanks

Many users are interested in the question of Is Spring Water Good For Fish Tanks. It all depends on the inhabitants who are in it.

The acid-base state and mineralization are not suitable for all species. Therefore, they first check in what conditions the fish for which water is being prepared should live.

is spring water good for fish tanks

About whether it is possible to pour spring water into the aquarium, we will tell in the article.

Is Spring Water Good For Fish Tanks

Spring water is often characterized by the following parameters:

  • high rates of carbonate hardness;
  • slightly alkaline acid-base state;
  • high mineralization;
  • absence of chemical elements, and compounds;
  • if the water came from artesian sources, it does not contain pathogenic bacteria.

Due to its purity, water does not need to be subjected to heat treatment. It is suitable for fish. However, under conditions of such ph and carbonate hardness, only a part of the species can survive. For example, cichlids. If you soften the water, it is suitable for many other species.

Should I do a full water change in my fish tank?

Most aquarists recommend using a partial replacement. Tap water is softer. At the same time, it contains a large number of microelements, minerals, and useful substances that favorably affect the life of fish.

It concentrates much fewer carbonates, so most individuals survive in it.If you combine spring and tap water at the same time, you get a mixed composition saturated with useful elements and minerals. But at the same time, the water will remain soft.

It will have the optimal ratio of acids and alkalis, so the composition is more neutral. In such an environment, normal respiration, reproduction, and vital activity of fish are possible.

Spring Water Pros and cons For Aquarium

Spring Water Pros For Aquarium

  1. The balance between physical and chemical elements.
  2. Destruction of pathogenic fungi, bacteria, and viruses when passing through the well.
  3. In the absence of chemical components that dramatically change the acid-base state, it is usually neutral or slightly alkaline.
  4. High oxygen saturation.
  5. Transparency, the absence of substances that cause pollution.

Spring water does not need to be infused for a long time or cleaned with chemicals. The composition is stable, the acidity does not change for a long time. But the products of fish metabolism will gradually shift ph down, forming an acidic environment.

Spring Water cons For Aquarium

  • the possibility of chemicals from neighboring structures (for example, from industrial waste) that the person did not know about before adding water to the aquarium;
  • a large amount of carbonates, which form increased hardness, which leads to poor dissolution of food, the death of some types of algae, fish;
  • the high-quality mineral composition does not last long, so you will need to change the water again;
  • a large amount of time spent collecting water since its pressure is minimal.

The main negative aspects come down to the composition of water. You need to be sure of its acid-base state and mineral properties. A chemical analysis will be required.

Do you have to condition spring water for fish tank?

To find out the parameters, a complete chemical analysis is carried out. It includes the following indicators:

  1. Acid-base state.
  2. General mineralization and composition of each substance separately.
  3. The ratio of organic and inorganic substances.
  4. Rigidity.
  5. Petroleum products, phenols, surfactants.
  6. Minerals – aluminum, beryllium, barium, boron, iron, manganese, cadmium, copper, molybdenum.

In every city, there are laboratories that determine the chemical composition of liquids, including water from a spring source.

Quick results are obtained in private laboratories. You can find them through the search web page. In Google or Yandex, they enter a request for chemical analysis of water for a specific city.The best indicators are issued by officially accredited organizations. Such laboratories will be able not only to make an analysis but also to qualitatively take a sample.

How do you prepare Spring water for a fish tank?

If the water meets all quality parameters, preliminary settling and filtration are not required. It is immediately poured into the aquarium, launching fish there.

how do you prepare spring water for a fish tank

At overestimated rates of carbonates, preliminary softening is carried out. This is done in two ways, described in the table:

Water softening methodHolding
FreezingWater is poured into a basin, left in the freezer. They take it out at the moment when it is covered with a thick crust. Make a hole. The water is drained, leaving only the ice. After melting it is ready to use
BoilingWater is kept on fire for 60 minutes. Cool down to 15-20 degrees. The top layer is drained into the sink, the rest is sent to the aquarium

It is recommended to pre-measure the pH of the water using one of the available methods. They can be indicator strips or a ph-meter.

Ok To Use Spring Water For An Aquarium without mixing?

Unlike tap water, spring water does not require prior infusion. It can be immediately poured into the aquarium. If it contains a lot of carbonates, pre-freezing or boiling is required. The temperature regime is set at 14-20 degrees and immediately poured into the aquarium.

If a person decides to mix tap and spring water, the following methods of additional preparation are carried out for mix tap and spring water:

  • infusion for 1-2 weeks;
  • determination of ph by a test system that is available;
  • raising ph with peat, lowering with baking soda.

The most optimal parameters correspond to a combination of tap and spring water in a ratio of 2:1. Then the softness will remain, the ph index will improve.

Alternatives to spring water for aquarium

The following types of water are suitable for aquariums:

  1. Tap water – most fish survive, as it has optimal parameters of hardness and mineral composition, but requires settling.
  2. Boiled – the absence of pathogenic microorganisms, but the destruction of some useful substances.
  3. Filtered – cleansing, getting rid of heavy metals and salts.

To the listed types, you can gradually add water from a river, a well, a lake, a spring. But you need to be completely sure of its quality.


Many people have questions about Is Spring Water Good For Fish Tanks. To eliminate doubts, chemical testing is first done to identify its composition.

The quality can be slightly improved by freezing, boiling, and filtering first. The best way is to mix tap and spring water.