Getting The Green Out Of Your Swimming Pool

by Pool Builders on 02-09-2011 in Articles

In a perfect world, you'd be able to easily clean up a murky, algae-filled swimming pool. Unfortunately it's not that easy to bring your green pool back to a clean, crystal clear swimming pool. With time, effort and money though, you can clean the brackish water.

The best way to avoid a green pool is by diligently keeping up with swimming pool maintenance. Many pool owners will find that no matter how diligent they are, they can be faced with a "green pool" occasionally. If you work with a swimming pool maintenance professional, chances are you won't be faced with this pool dilemma, though.

Cleaning the algae-filled swimming pool will not be easy but can be done. Here are some steps to take to get your pool back to being swimmable:

  1. All debris needs to be removed from the pool. Use a large leaf net - not a skimmer as you can stir up the water and make it temporarily worse. Don't vacuum the swimming pool if you cannot clearly see the bottom of the pool or if you have a lot of large debris on the bottom. Doing this could damage the vacuum or clog the skimmer, filter or underground plumbing.
  2. You have to adjust the pH and alkalinity levels using a pH plus, pH minus or alkalinity plus chemicals. The levels must be within the proper ranges or the water will never clear.
  3. Be prepared to shock -- Super chlorinate -- the pool to kill off algae and bacteria. If your pool is filthy and green be prepared to use dozens of gallons of liquid chlorine over a period of days before you see the water begin to clear. Begin by adding three or four gallons of water. If no visible results are noted overnight, add three or four more gallons the next day. Keep up this process until the water changes to a light green, cloudy white or to clear. At this point, you cannot overshock the pool. The more you add the more quickly it will clear. Shock is available in power or liquid form. The liquid form typically works faster.
  4. You should plan to run the filter 24 hours a day and backwash three or four times a day if you want to see quick results. Remember that green water will quickly clog your filter so you will have to backwash several times. Just as you can't overshock the pool, you can't over-backwash the filter either. The more you run the pool, the more you backwash, the quicker it will clean. If you're using a DE filter, you will have to add new DE to the skimmer that is closest to the filter after each backwashing. Having a DE filter is more work than a typical sand filter but if you've got a green pool a DE filter will clean it more quickly than sand.
Follow the steps above and you should see results in about a week. If you don't see results though, it may be because your filter isn't functioning correctly. You should plan to contact a pool professional because if the filter is not working properly, the pool will not clear up.

After the water is clear, you will likely see debris and algae floating on the bottom of the swimming pool. If it's a small amount, you can vacuum it up. If it is large amounts of debris, you should contact a pool professional to have the swimming pool professionally power vacuumed to save wear and tear on your equipment.

Daily maintenance and chemical balance testing will prevent your pool from getting green and keep it algae free. If pool maintenance is not something you're prepared to perform on a daily basis, it's best to contact a pool contractor to perform it for you.

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