It is able to kill bacteria and algae, among other things.

It can be used to kill algae and fungi.

More than 400 suffer extensive bleaching, in which heat kills algae that help reef-building organisms grow.

Copper compounds are also used to kill fungi and algae.

Copper(II) carbonate can be used to kill algae.

It is used to kill algae in ponds and lakes.

Runoff kills algae, in turn killing coral, destroying plant life and sending fish elsewhere.

The chemical chlorine is usually used to killing germs and algae.

The department puts a chemical in the water to kill algae, and it doesn't seem to be hurting the fish.

Such paints kill algae, barnacles, and other marine life that adhere to ship hulls.