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residential pool maintenance

Why is my Pool Turning Green?

The water in your pool can change colors for multiple reasons. When it turns green the most common culprit is algae. There are other causes of green pool water that you may not have even considered, but will succeed in ruining your pool experience.

Algae

If the appropriate amount of chlorine isn’t maintained within the pool water, algae will begin to grow and the entire volume of water can transform into a green quagmire within a day. A swimming pool with an algae bloom isn’t safe to swim in and can make you ill. An additional concern is if chlorine levels aren’t maintained at the correct levels, the algae-laden water can provide an excellent breeding ground for disease-carrying insects such as mosquitoes.

Filter Problems

Algae can also form if the power and size of your pool pump and filter are too small for the amount of water it’s cleaning. Clearing the pool of algae can take varying amounts of time, depending upon the type of filter that’s in use. It can take a week with a sand-based filter to completely clear the algae from the pool. If you have a cartridge filter, you may need to clean the cartridge every day until the pool water returns to normal.

Metals

Copper is another common cause of green pool water and can originate from a variety of sources that include cheap algaecides, from water sources, and even copper heating elements of pool heaters. It’s a problem that will get continually worse if left untreated.

The greening of pool water in this situation typically happens when a pool is shocked. If present in sufficient amounts, the metal(s) will oxidize, resulting in green pool water. Blond hair will also turn green when excessive levels of metals are present.

Pollen

Pool water can also turn green or a greenish-yellow from pollen falls. The good thing about the situation is that pollen isn’t harmful or dangerous – unless you have severe allergies. Even if you don’t have plants close by the pool, pollen is easily blown about by breezes and can drift into your pool.

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green pool cleanup

Common Pool Maintenance Mistakes

Everyone wants to save money, but a DIY approach to the swimming pool isn’t necessarily a good idea. It can actually cost you money in the long run, make the pool unusable, and cause damage. The following are some of the most common mistakes that people make when trying to service the pool themselves.

Automatic Pool Cleaner

A robotic cleaner may sound like a time saver to remove algae, but it only succeeds in pushing it around the pool. The mesh bags used by automatic cleaners quickly become clogged and instead of capturing algae it’s simply stirred up within the pool.

Brushing

Failure to give the pool a thorough and regular brushing results in scum build-up that’s unpleasant and unhygienic.

Calcium Content

Balancing the calcium hardness in the pool extends the life of everything from the vinyl liner to the filter. Too much calcium will make the water cloudy.

Filter

You want the pool to look clear and sparkling and to obtain that appearance the filter should be run a minimum of eight hours each day. Less than that and the water can become contaminated with all types of unwelcome elements.

pH Levels

The pH level in pools requires close monitoring to ensure the water is appropriate for swimming and to prevent damage to equipment. A pH level that’s too acidic will damage filters, pumps, heaters, vinyl liners, automatic pool cleaners and solar blankets.

Shocking the Pool

Pouring “pool shock” directly into the pool can set up a chain of events that will be expensive to repair. Pool shock is concentrated chlorine. When poured directly into the pool, t sinks to the bottom and bleaches the vinyl liner, which then becomes brittle. It’s only a matter of time before the liner fails and leaks occur.

Testing

There are a number of things that a pool should be tested for each week beyond the pH and alkaline levels. To ensure a safe and sanitary pool, you’ll need to test for calcium hardness, salt, copper, iron, and chlorine.

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