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Uses of Algaecides

8/6/2012 7:52:40 AM | by Anonymous

Algaecides

Before understanding what algaecides are, it is important to know what algae is and how it occurs. These microscopic single celled forms are a type of plant which occurs in water with the right type of conditions overtime. A pool of water would overtime be exposed to wind and atmospheric conditions that are right for algae to thrive. There are several varieties of algae in the world with green algae being the most common amongst all. These algae usually float in water or cling to the walls of a pool or a pond. They are the fastest growing type of algae that give a pool an uninviting look and block view of the bottom of the pool. Before this type of algae is formed, the walls of the pool start to feel slippery with the water having a hazy look. Algae tends to give a pool a dirty and uninviting look and therefore it is important to clean a private pond or pool of the algae. Too much algae in a pond can also take in all the oxygen which other underwater living organisms require to survive. There are also certain types of algae which can be harmful for humans, fish and plants as they give off hazardous toxins. Therefore excessive algae should be prevented or removed.

 

Algaecides are substances being used to kill or prevent the growth of algae. They can be either natural or man-made. An example of a natural algaecide is barley straw which is contained in mesh bags and floated in a pond or water pool to reduce the growth of algae without causing any harm to the animals living in the water. However, these algaecides are not approved by authorities as they are known to produce mixed results. Two types of synthetic algaecides are Copper Sulphate and Polyquat. These chemical treatments help to prevent and kill algae. Algaecides are quick and easy way to remove algae from a pool or water body. In the case of swimming pools, algaecides can be used to prevent and kill algae, thus lowering the amount of chlorine required in the pool to prevent it. Too much chlorine in a swimming pool can cause stinging to eyes and nose and lowering the chlorine levels and replacing them with algaecides provide a more pleasant water to swim in. With lesser algae in the water, the water filtration systems are able to last longer with no plant material to clog the filters of the filtration system.

 

It is important to select an algaecide carefully as some of these chemical substances may not be meant for treatment of pond water or swimming pool water. It is important to read the labels of these substances carefully for proper use and avoid any unwanted accidents. Using too much algaecide can also be harmful. For example if excessive algaecide is used in a pond, it could change the pH levels of the water drastically which can be very harmful for the living organisms in the water.

 

Polyquats

These types of algaecides are non-foaming and are available in the market in concentrations of 30 to 60%. These types of algaecides are very effective on green algae and also to those chlorine resistant mustard and black algae.

 

Copper Sulphate

These effective algaecides are usually used in ponds, lagoons and swimming pools to prevent and kill any forms of algae. As they contain copper, the soluble copper salts overtime precipitate from pool water and deposit on the walls of the pool. This creates a “blueing” effect and when there is chlorine present in the water, these salts react with it and cause grey or black stains on the walls of the pools. Therefore, these algaecides should be used for ponds rather than swimming pools.

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