Do pools need more chlorine in summer?

As the bacteria multiple, your chlorine ramps up to kill it. The result? You lose free chlorine. In the heat of the summer, consider adding twice as much chlorine to your pool so you maintain an adequate level.
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Do pools use more chlorine in summer?

Heat can cause evaporation, while propagating bacterial growth. This adds extra work for your pool's chlorine, causing it to deplete much faster than it would in cooler weather. Regular pool use takes an additional toll on chlorine levels, due to the surplus of organic materials we bring into the water.
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How often should I add chlorine to my pool?

Shock is liquid or granular chlorine. You should add one gallon (or one pound) of shock per 10,000 gallons of pool water every week to two weeks. During hot weather or frequent use, you may need to shock more frequently.
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Do you need more chlorine in hot weather?

Frequently check chlorine level:

Even in perfectly balanced pools, chlorine will be used up faster on extremely hot, sunny days. This means that you may need to use more chlorine tablets and shock than you typically do.
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How much chlorine do I need for my pool for the summer?

Calculate: 1 bag for each 10,000 gallons, per week or per month. Example: 2.5 bags per week for 20 weeks, or 50 lbs. Or 2.5 bags per month for 5 months, or 12.5 lbs. Recommendation: Get a 50 lb bucket of shock chlorine if you expect to shock weekly, or for 5 monthly shocks, you could buy the 12 Pack of pool shock.
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Why do pools need chlorine?



Can you over chlorinate a pool?

Of course, too much chlorine in pool water can be dangerous. Exposure to over-chlorination can provoke asthma, lung irritation, and potentially skin and eye irritation. As well as being potentially bad for you, it's bad for your pool.
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Does pool need less chlorine in winter?

You do not need as much pool shock during winter as you normally would to achieve the same effect. The National Institutes of Health found that at normal summer water temperatures, the efficacy of chlorine was 2-3 times less than for water temperatures around 50 degrees.
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Does sun affect chlorine in pools?

That gorgeous sunlight you like to enjoy near the pool also affects the chlorine. The sun's ultraviolet rays can cut down the chlorine concentration by 90% in as little as two hours. And on very hot days, the chlorine will deplete faster, becoming a cesspool for bacteria.
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How often should I shock my pool in the summer?

It is recommended to shock your pool once or twice a month and then every week during the summer.
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How long does chlorine last in pool?

Most floating chlorinators can hold anywhere from two to eight weeks worth of chlorine, depending on conditions such as the season and your pool's size. An automatic feeder works in a similar way, allowing it to mix with the pool water slowly and deliberately.
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Why do I have to add chlorine to my pool every day?

There are quite a few possible causes for your pool to develop an excessive chlorine demand. You might have an infestation of algae, fungus or bacteria that can deplete normal chlorine levels and it is possible for this to occur without many visible signs. Your pool may appear to have a dusty look on the pool bottom.
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Is shock the same as chlorine?

SKIMMER NOTES: No. Chlorine and shock are not the same thing. Shock has a more intense chemical strength than the traditional chlorine sanitizers, and it also differs in how you should apply it to your swimming pool.
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How do I maintain the chlorine level in my pool?

How to Help Pool Chlorine Last Longer
  1. Chlorine Stabilizer. Chlorine stabilizer or Cynanuric Acid (CYA) is a pool balancing chemical used to help chlorine last longer. ...
  2. Algaecide. Algaecides are used to treat and prevent pool algae. ...
  3. Clarifier. Clarifiers help to keep pool water clear. ...
  4. Test. Pool chemistry can change quickly.
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At what temperature does chlorine stop working?

If water temperature exceeds 113º F, the Cell may fail. Reduced chlorine output at low temps. Reduced chlorine output at low temps. Reduced chlorine output at low temps.
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How fast does chlorine drop?

After using chlorine, you should allow 24 hours for the level to drop, but if you use non-chlorine shock (e.g., potassium monopersulfate), you should be able to get in after 10 minutes. Always test the levels after shocking the water before getting in.
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Does heat break down chlorine?

Heat affects the breakdown of chlorine. In addition, bacteria proliferate in warm water. If you do not test your pool water frequently, preferably every day in warm weather, you will not have the clear, clean water you desire.
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Can you add too much shock to a pool?

Can you put too much shock in a pool? SKIMMER NOTES: It's unlikely but it could happen. It would take a lot of shock to really make the water unsafe for swimming. The best way to make sure you're safe to swim is to test your pool water and make sure free chlorine levels are between 1-4ppm for healthy swimming.
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How many hours should you wait to swim after shocking a pool?

In general, it's recommended that you wait up to 24 hours to hop into a pool after it's been shocked, depending on the size of the pool, Alan says.
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What happens if you don't shock your pool?

Try to reach the breakpoint every time you shock your pool. Not hitting the breakpoint can result in even more chloramines in your pool, and if the chloramine levels continue to rise unchecked, you may eventually have to partially or even fully replace your water to fix the issue.
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Does chlorine lose effectiveness?

Liquid chlorine (sodium hypochlorite) is the most unstable pool chemical, losing 50% of its potency within the first six months and 90% after a year; when exposed to extremely hot or cold temperatures, or sunlight, it degrades even faster.
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Does sunlight lower chlorine levels?

The sun's ultraviolet rays can quickly alter the chlorine level in the pool, especially on a hot day. In just 2 short hours, the sun can lower the chlorine level by as much as 90%. The heat of the sun causes the available chlorine to evaporate.
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Does UV light break down chlorine?

UV radiation is an effective method to remove chlorine and destroy chloramines by a process called photodegradation or photolysis. Both Low Pressure UV lamps and Medium Pressure (polychromatic) uv lamps have been shown to dechlorinate and reduce chloramines successfully.
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Does cold water hold chlorine?

There are a number of factors which affect the rate at which chlorine is consumed in the swimming pool. Chlorine dissipates more rapidly in warm water than in cold water.
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Should I shock pool in winter?

Shocking the pool during the winter months can certainly help to avoid a green swamp-like pool in the spring. It's often recommended. However, poor water balance or improper application can lead to unintended consequences, such as discoloration and damage to pool surfaces.
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What chemicals do you put in pool for winter?

Other chemicals needed to close a pool work specifically to keep pool water clean during winter months.
...
What chemicals do I need to close my pool?
  • Chlorine.
  • Pool Shock.
  • Soda Ash.
  • Baking Soda.
  • Muriatic Acid.
  • Winter Algaecide.
  • Pool Antifreeze.
  • Stain and Scale Prevention.
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