Copper Sulphate is a compound of copper and sulfur, usually found in crystal form. It is a blue-green crystalline solid and is soluble in water. Copper Sulphate is widely used in agriculture, horticulture, and industry. In agriculture, it is used as a fungicide to control fungus on plants, and it can also be used as an algaecide, herbicide, and nematocide. In horticulture, copper sulphate is used to control snails and slugs, and to reduce the growth of algae in water features. In industry, it is used to electroplate, in the manufacture of pigments, and in some processes of leather tanning.