How to Diagnose and Fix a Green Pool


Does your pool appear green, smell bad, or have a nasty taste?

The quality of your pool water reflects the state of your pool’s health. A green pool is a pool in trouble, and it won’t go away on its own. This happens when your pool experiences extreme heat, is poorly circulated, and if you’ve experienced heavy rain. 

Are you wondering how to diagnose a green pool and fix it? Here are some ways to diagnose a case of pool algae, and what you can do to fix a green pool.

Shock the Pool With Chlorinated Water 

If algae has turned your pool green, the first thing you need to do is shock the pool with chlorinated water. This will kill the algae and make the blue water safe to swim in again. To do this, you will need to raise the chlorine level in the water to between 10 and 15 parts per million.

Once the chlorine level is high enough, you need to keep the pool covered to prevent the algae from coming back. For more info, you can visit

Run the Pool Filter for 12 to 24 Hours a Day

If your pool water has turned fresh, you have to run your pool filter for 12 to 24 hours a day until the water is clear. Algae can multiply in warm, stagnant water, and it only takes a small amount to turn your pool green. You may also need to vacuum the pond to discard the kelp from the floor and walls.

Then add an algaecide to your pool. This will help to remove the crust from the water. 

Skim the Pool Daily

To keep your swimming pool clean and bacteria-free, you should skim it daily. Skimming removes debris, such as leaves and twigs, that fall into the pool. It also removes bugs and other insects that can contaminate the water.

To clean your pool skim the millpond, you will need a long-handled net. Start at the shallow end of the pool and work your way around the perimeter. Move the net in a sweeping motion to collect debris and be sure to empty the net often so it doesn’t become overloaded and sink.

Check the PH and Chlorine Levels

To ensure your pool is healthy and complimentary, you should check the chlorine and pH levels. PH levels that are too low or too high can cause problems, so testing and adjusting these levels as needed is important. If the pH is off, you can add chemicals to raise or lower it as needed.

Disinfectant levels should be checked often, as too little halogen can cause algae growth. If you notice your pool is starting to have green algae growth, it’s important to take action right away to diagnose and fix the problem.

Fix a Green Pool Today

If you have a green pool, don’t despair. Shock the pool with chlorinated water. Run the pool filter for 12 to 24 hours a day.

Skim the pool daily, and check the PH and chlorine levels. With a little troubleshooting, you should be able to get your pool back to being crystal clear in no time.

Interested in learning more about how to fix a pool? Check out the rest of our site.

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