Pool Chemical Descriptions

Clarifier

An "as-needed" chemical. If water is cloudy, it may be due to thousands of small particles (bacteria, dirt, and other debris) that are suspended in the pool water. These particles are so small that they escape both the chemicals and the filter. If this is the case, a Clarifier is used to restore water clarity. Clarifiers are liquid. Read the instructions on the label to determine the amount to add, how it should be added (either diluted in water or poured straight from the bottle), and if it should be added before or after shocking the pool; clarifiers are often used in conjunction with shock to restore water clarity.

Algaecide

An "as-needed" chemical. If algae does occur, Algaecides are used to help kill algae. The majority of algaecides are liquid, but some types do come in granular form. Once you determine the type of algae (green algae, mustard algae, or black algae), you can purchase the appropriate algaecide and begin the proper treatment. Then read the instructions on the label to determine the amount to add, how it should be added (most manufacturers of algaecides recommend pouring it straight from the bottle), and other precautions. Note: In conjunction with the algaecide, you will also need to use a chlorine-based shock and engage in a labor-intensive and time-consuming maintenance schedule to eliminate the algae.

Algistat

An optional chemical. Algistats are used to help prevent algae. Some pool owners will use an algistat in conjunction with their other mandatory chemicals in order to help prevent an algae outbreak. Algistats are typically packaged and sold as "Preventative Algaecide," or "Maintenance Algaecide." Algistats are liquid. Read the instructions on the label to determine the amount to add, how it should be added (most manufacturers of algistats recommend pouring it straight from the bottle), and other precautions.

Hardness Increaser

Used to raise Hardness levels. The scientific name is Calcium Chloride. Calcium Chloride is typically packaged and sold as "Hardness Increaser," "Hardness Up," or "Hardness Plus." Calcium Chloride is granular. Read the instructions on the label to determine the amount to add, how it should be added (either diluted in water or broadcast straight from the container), a maximum amount (per 10,000 gallons of water) that can be added at one time, and other precautions. Note: There is no product that is packaged and sold as a Hardness Decreaser. If your Hardness level is too high, you will have to drain your pool, either partially or completely, in order to lower the Hardness level.

Soda Ash

An alternative to raise pH. Like Sodium Carbonate (pH Increaser), Soda Ash is also granular. Read the instructions on the label to determine the amount to add, how it should be add (either diluted in water or broadcast straight from the package), a maximum amount (per 10,000 gallons of water) that can be added at one time, and other precautions.

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