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Properly Caring for your Inground Liner

Proper care and maintenance of your vinyl pool liner will ensure summers of memories for years to come. We at GLI Pool Products would like to share some helpful information for the care of your inground liner.

The first step in the proper maintenance of your inground vinyl liner is maintaining proper chemical levels. As always we suggest having an APSP Certified Pool Professional regularly check your pool chemical levels, as they will know exactly what your pool needs are given each unique backyard environment, the below information and tips are to assist you between visits.

We suggest the following at home water testing between regularly scheduled professional testing.

TestFrequencyRecommended Range
pH Daily  

7.2 – 7.6

Free Chlorine Daily 1.0 – 2.0 ppm
Total Alkalinity Weekly 80 – 120 ppm
Calcium Hardness Monthly 200 – 300 ppm
Stabilizer Monthly 35 – 60 ppm

What is pH?

PH is the measurement of acidity in the pools water. PH is measured on a scale of 0 to 14 with 7 being neutral. A pH below 7.0 means the water is very acidic; as the pH approaches 8.0 the water becomes very basic (alkaline). A pH level of 7.4 is ideal for most pools. (Fun Fact: 7.4 is the pH of human tears.)

It is important to monitor the pH levels of your pool to ensure your vinyl liner does not become damaged. A change one way or the other can cause substantial problems to your vinyl liner. A pH below 7.0 causes your water to become aggressive to pipes, vinyl pool walls and metal components in heaters, pumps and filters. All of these elements stand the chance to corrode. Low pH water also causes skin and eye irritation, making the eyes look red. High pH causes pool water to look dull and flat, and also causes skin & eye irritation. The pH of your pool water will have a significant effect on your swimmers comfort.

Daily home water tests and regular dealer water tests are recommended. If you were to notice a pH that is out of the suggested range you should immediately contact your local pool professional for assistance.

Chlorine

All pool owners know the importance of chlorine. Chlorine is a chemical most often used to keep swimming pools free of bacteria that can be hazardous to humans. Currently the industry standard for chlorine levels is between 1.0 ppm and 2.0 ppm.

Daily testing and monitoring of your chlorine levels will ensure that your pool maintains a stable level of chlorine; you will want to especially monitor these levels after heavy rainfalls. The sudden increase in water to the pool can cause your chlorine levels to fall below the recommended range, potentially leading to algae & bacteria growth and staining, if the chlorine is not adjusted. At the same time, you want to be sure your chlorine levels do not exceed 2.5 ppm. As always, when in doubt contact your pool professional.

Total Alkalinity

The total alkalinity (TA) is the measure of how much alkaline substances there are in the pool water. With swimming pools, the main concern is bicarbonate alkalinity, which should be between 80 – 120 ppm. When the TA falls between this range it helps to “stabilize” the pH level and prevent rapid changes to the pH. In short, TA is a measure of how resistant to change your pH levels are.

It is recommended that you test your pools TA levels at the very least weekly and if they are outside the recommended range you contact your pool professional for directions on a process to correct this issue.

Calcium Hardness

Well we’ve all seen and/or heard of calcium build up within our home water lines, it is also important to monitor within your swimming pool. Water hardness consists of both calcium & magnesium salts; only the calcium component is relevant to swimming pool water balance.

The effects of high & low hardness can cause some ill effects on your swimming pool. High calcium hardness causes cloudy water, rough surfaces, clogged filters & circulation and heater inefficiency, while calcium hardness that is too low causes pitting of concrete pool services, etching of plaster, and dissolving grout. Keep your calcium hardness between 200 – 300 ppm to avoid any ill effects to your pool.

Other Tips

· If you have questions regarding your pools chemistry speak to your pool professional or visit APSP.org. The above is intended to provide an overview of information and nothing can replace the 1-on-1 assistance your pool professional can provide.

· Allow chemicals to circulate through the pool and do not add more than one chemical at a time.

· Do NOT use abrasive household chemicals on your liner. Take special care to clean the area above the water line regularly to prevent fading from the sun & UV rays.

· Clean your pool regularly. GLI’s Dirt Devil Robotic pool cleaners can help cleaning the entire pool without connecting to your pools filtration system, as they work independently. Visit here for more information on our cleaners.

· Properly covering and winterizing your swimming pool in the fall can help extend the life of your vinyl liner. Visit here to see GLI’s line-up of Safety Covers that can provide you both the best in winter safety and ease of spring cleanup.


 
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