Chemicals need to be added to a swimming pool in order to keep the water clean. A mixture of chemicals need to be added in order to give the pool the right balance. For example, if the pool water has too much chlorine, then it can make the swimmer's skin itch. Other chemicals help prevent algae and bacteria.
Use pool test strips to find out what chemicals are needed. Dip one test strip into the pool's water. Compare the color on the strip to the chart that comes with the strips. There will be a color chart that will display what the strip's colors mean and what chemical is needed.
Add three chlorine tablets. These tablets resemble a hockey puck, which is why many times they will also be referred to as pucks. These tablets can be placed in the skimmer. The skimmer is a long pole with a net attached to its end. This is used often to clean out floating debris such as leaves. Once the tablets are put in the skimmer, then place the net into the water and walk around the sides of the pool until it dissolves.
Mix shock treatment. The shock treatment destroys unwanted compounds in the pool water, such as excess chlorine. Purchase Aqua Chem powdered shock treatment. Get a 5-gallon bucket and fill it halfway with pool water. Use a measuring cup to measure properly. The size of the pool will determine how much shock treatment is needed (measurements will be on the back of the container). Mix the shock treatment and then pour it out slowly while walking around the perimeter of the pool.
Put algaecide into the pool. Sometimes a pool will have black and/or green scum that sits on the walls and the bottom of the pool. Using an algaecide chemical will help rid the pool of it. Pour the algaecide where the water filter is in order for it to push the chemical quickly through the water. Use 2 oz. of algaecide per 5,000 gallons of water. This needs to be done on a weekly basis to keep algae away.