Why are fishes not able to survive in distilled water?

Answer 1

My local fish store sells distilled water, in fact it's water produced by Reverse Osmosis - it's good clean water but it's too pure (no salts), so you need to add in salts, most fish places selling Ro water should have a suitable range of conditioners to suit different fish needs. tetras are none too keen on "hard" water so it's also good for them.

There is a world of difference between distilled and reverse osmosis, ro is usually sold to marine hobbiest, salt is added to get the density of the water correct. it is not a good idea to use ro in a fresh water tank unless you have an excess nutrient problem then you would balance out, fresh water fish absorb water trough thier body so they get important trace elements, ro removes all trace elements from the water. anyway the beta can live in just about anything, because of thier breathing tube they do not need oxegen in the water to survive. long story short,a fish will do ok in DISTILLED water.

Treated tap water is anyway better for both your fish and your plants. There are a number of minerals and electrolytes that your fish and your plants need in tap water. Distilled water has no carbonate hardness (KH) which the water needs in a tank to stabilize the pH.

Answer 2

Dissolved Oxygen In Distilled Water

Answer 3

It has NOTHING to do with oxygen. All water has the potential to contain small or large amounts of oxygen - surface and water column movement is how it is introduced. Obviously if you pour water out of a bottle it's going to have less oxygen then out of the tap, but this is easily remedied by aerating the water first, or doing small, partial water changes (as is recommended anyway).

Distilled water is basically evaporated water. This means all the minerals, salts, and vitamins that our fish depend on for health, and the water depends on for stability, are missing.

This also means that you can use distilled water if you wish, but it creates more work and a more experienced aquarist because you must add the minerals and nutrients yourself through the use of additives and salts.

Answer 4

Distilled water does not contain the essential salts and minerals necessary for life. It is just very pure water and the fishes cannot survive in distilled water.

Answer 5

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Take a fresh grape fruit and keep it in distilled water for an hour. it is stouter than before. Another fresh grape fruit kept in salty water for an hour will appear slim and wrinkled. The grape has dissolved minerals,sugars and other ingredients in its juice. The skin of the grape is a semi permeable membrane across which water can diffuse from one side to the other through osmosis. When the grape is kept inside distilled water, the concentration(salinity) of juice in the grape is higher than that of water and water moves osmotically from outside the grape to inside. Hence the grape appeared stouter. the reverse happened in the case of salty water. The skin of the fish is like the skin of the grape fruit. If the fish is in distilled water, there is an osmotic flow of water from outside the fish to the inside because the salinity of the fish body is higher than that of water. Thus there is danger of dilution of the body fluids of the fish or at worst that of being blown out if the fish is to be in distilled water for a very long period of time.

Answer 6

A process called osmoregulation occurs in fishes living in marine water hence they cannot maintain their water balance with the surrounding distilled water. so, fishes can't survive in distilled water.

Answer 7

in distilled water there is lack of dissolve oxygen which is essential content for living in water,therefore fishes are not able to survive in distilled water!

Answer 8

I guess fishes require the minerals present in normal water.Distilled water is completely devoid of minerals.Also,there is lack of oxygen in distilled water.

Answer 9

Distilled H2O is the purest form of water and does not have any oxygen.does when the water passes the surface of the gill rakers it absorb any dissolved O2.does they die of asphyxiation

Answer 10

in distilled water their is more amount of dissolved oxygen ............fishes can only use little amount of oxygen so they are not able to survive in the distilled water...