Is copper sulfate toxic to fish?

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asked Dec 19, 2023 in Fish by Bouraghda (1,650 points)
Is copper sulfate toxic to fish?

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answered Sep 3 by landobrian (11,310 points)
Copper sulfate is toxic to fish and aquatic life and when a lake or pond is treated with copper sulfate it has the potential to kill off fish.

Fish should be removed from a pond before treating it with copper sulfate.

Fish such as Koi, Trout and many Juvenile species of fish are very sensitive to copper and copper sulfate.

When you put copper sulfate in water the copper sulfate starts to dissolve and in the process of dissolving a small amount of heat energy is released during the dissolution.

The color changes to blue because the 5 molecules of water get attached to it.

And the molecules are referred to as the water of crystallization.

When water is added to a anhydrous copper sulfate solution, it turns into a hydrated form of copper sulfate.

Commonly used hydrated form of copper sulfate is. 5 H 2 O .

It is bright blue in color due to the d-d transitions that take place between the ligands and the central metal atom.

It exothermically dissolves in water to give the aquo complex [Cu(H 2O) 6]2+, which has octahedral molecular geometry.

The structure of the solid pentahydrate reveals a polymeric structure wherein copper is again octahedral but bound to four water ligands.

A soluble salt like copper sulphate dissolves freely in water when the two are mixed.

The process is called dissolution and the homogeneous mixture formed is called a solution.

Copper sulfate is an inorganic compound that combines sulfur with copper.

It can kill bacteria, algae, roots, plants, snails, and fungi.

The toxicity of copper sulfate depends on the copper content.

Copper is an essential mineral.

Copper sulfate is used as a fungicide, algaecide, root killer, and herbicide in both agriculture and non-agricultural settings.

It is also used as an antimicrobial and molluscicide.

Uses for individual products containing copper sulfate vary widely.

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