How to Use Muriatic Acid in Pools and Spas
One way to keep the pH balance in your pool at the correct level is muriatic acid. While this type of acid is quite powerful, and can be dangerous, it is perfectly safe to add to your pool provided that you do it correctly, and under the right circumstances. Fortunately, it is easy to determine if your pool needs to be more acidic. Additionally, it is a simple process to add muriatic acid to your pool as well. By following these steps, you can keep your pool in good working order with a minimum of effort.
Step 1 - Testing the Pool
It is quite possible that your pool does not need muriatic acid at all. However, to be sure that it is or is not necessary, you should get your pool water tested. By doing this, you can find out the pH balance in your pool water, and accurately determine whether you need to add acid to keep it at a good level, and if so, how much.
Get a bottle and fill it with water from your pool. Next, take that sample to professionals for analysis. Any store that sells supplies for your pool will be able to either do this themselves or direct you to a service that can. Once you have the results back, you can use them to decide what to do next.
You can also decide to use your own pool testing kit if you prefer.
Step 2 - Planning
If the results show that your pool water has an appropriate pH
value, you are done. However, it is a good idea to get your pool water tested regularly, and it is quite likely that at some point you will need to add acid to keep it balanced.
If this turns out to be the case, you should gather your supplies and get ready to add muriatic acid to your pool.
Step 3 - Preparing the Acid
To begin, fill a bucket with water. Be sure to take note of approximately how much water you have added to the bucket. Next, add muriatic acid to the bucket. Never use more than one pint, and never use more than 1/10 of the amount of water you have already added. Be extremely careful, as muriatic acid can burn skin and damage clothes.
Step 4 - Adding the Acid
Once you have mixed the acid into the water, you can add it to your pool. However, you should make sure your pool filter is on first. Make a complete circle around your pool, adding small amounts of acid spread evenly around the areas as you pass them. Finish up by adding the remainder to the deep end. Do not use your pool for at least 30 minutes.
Four hours after you finish adding acid to your pool, you should take another sample of the water. Have this sample tested, or test it yourself. When you have the results, you may want to add more acid. However, adding more acid before you have the test results is a bad idea. Test your pool regularly.Source: www.doityourself.com