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.
Key difference: Liquor is essentially an alcoholic beverage. It is also commonly known as spirit or distilled beverage. These liquors are usually produced by a method of fermenting grain, fruit, or vegetables. Liqueur, on the other hand, is essentially liquor that has been flavored with fruit, cream, herbs, spices, flowers, nuts or even cream. It may also contain added sugar or sweeteners, such as high-fructose corn syrup. Liquor is essentially an alcoholic beverage. It is also commonly known as spirit or distilled beverage.