When water is stagnant, has a high temperature or a high concentration of Nitrates and Phosphates, an algae bloom might occur, which can cause several problems. Blue-green algae growth, also known as cyanobacteria, can cause a foul odour to the water, a layer of scum on the surface and even pose a health risk. Green algae may colour the water green, look unclear and plants can die. Therefore an algae problem is often unwanted and algae control is desired.
1 An alcoholic beverage made by distillation rather than by fermentation. 2  A rich broth resulting from the prolonged cooking of meat or vegetables, especially greens. 3  Also called pot liquor. 4  An aqueous solution of a nonvolatile substance. 5  A solution, emulsion, or suspension for industrial use.
Full Definition of ALCOHOL. 1. a: ethanol especially when considered as the intoxicating agent in fermented and distilled liquors b: drink (as whiskey or beer) containing ethanol c: a mixture of ethanol and water that is usually 95 percent ethanol. 2.weet. : a clear liquid that has a strong smell, that is used in some medicines and other products, and that is the substance in liquors (such as beer, wine, or whiskey) that can make a person drunk. : drinks containing alcohol.