How long does spa shock take to work?

Most spa shock will work within about 15 minutes. No matter your method of shocking, make sure to remove your spa cover for at least 45 minutes after adding the shock to allow the shock treatment to work well. Every product is different so ensure you follow the instructions on the shock treatment product packaging.
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How long do you have to wait after you shock a hot tub?

How long do I need to wait after shocking my hot tub? There is no set time to wait before using your hot tub. All brands give different recommendations, ranging from 20 minutes to 24 hours. However, before donning your swimsuit and stepping inside, we suggest using a test strip to ensure your chlorine levels are safe.
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Can you over shock a hot tub?

The honest truth is that every hot tub owner has accidentally over-shocked their hot tub at least once. It happens from time to time and it's not the end of the world. Try to keep it to a minimum, though, as it can damage your hot tub and actually harm your body, too.
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What does spa shock do?

The main purpose of spa shock is to break-down organic waste contaminants which cause bad odors and cloudy or foamy hot tub water. It does this by oxidizing the water, which is the process of rapidly removing the outer electrons from contaminants in the water that the spa shock comes in contact with.
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Can I shock my hot tub twice?

The general rule of thumb is to shock your swim spa at least once a week. If it's getting a lot more use than usual or several different people are using it, you may want to consider shocking the water twice a week. Just make sure to test the water beforehand and ensure your pH levels are where they're supposed to be.
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How To SHOCK Your HOT TUB | Swim University



Is shock the same as chlorine?

Shock is chlorine, in a high dose, meant to shock your pool and raise the chlorine level quickly. Chlorine tabs (placed in a chlorinator, floater, or skimmer basket) maintain a chlorine residual in the water. You do need to use both tabs and shock.
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Should I shock my hot tub after every use?

Regular hot tub shocking is inevitable to keep your water clean and safe for use. Dead skin and other elements like hair may end up dropping in the hot tub, leaving the tub in a mess. It is essential to shock the hot tub frequently – at least once every week.
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How long do you wait 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 is the difference between pool shock and spa shock?

Unlike pool water, which is generally cool in temperature, spa water is hot and a perfect breeding ground for all kinds of bacteria. This makes sanitizer an essential chemical in hot tubs. Alkalinity adjusters, pH adjusters, algaecides, and clarifiers can be used for this purpose.
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How long after shock can I add chlorine?

You should wait one hour per pound of shock product added, and then test the water to confirm the pH and chlorine are in the proper range before letting anyone enter the pool. As a reminder, you want your pH to be between 7.2 and 7.8ppm and your free available chlorine to be 1-4ppm for safe swimming.
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Can you add chlorine and shock at the same time hot tub?

No, you should not add shock and chlorine at the same time. The best thing to do is add spa shock treatment first and allow that to work, then test and add chlorine if needed.
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What temperature should I leave my hot tub on overnight?

Knowing that hot tub water heats up around three to six degrees per hour, keeping it as low as 10° less can still be fine. At most, it will take about 3 hours to get back to normal when you're ready for it. But if you find your hot tub heats slower, or you don't like waiting, keep it at 5 degrees less instead.
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Is it safe to go in a hot tub with high chlorine?

No. It's not safe to get in a hot tub where chlorine levels are above 3 parts per million on your test strip. Levels above that can lead to red, itchy skin & eyes, & respiratory issues. Levels over 5ppm can lead to chlorine poisoning which adds the symptoms of nausea, vomiting, and difficulty breathing.
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How do you clear up a cloudy hot tub?

How to fix and clear cloudy hot tub water
  1. Check your filter(s). This is your first point of call with any water quality problem, especially when clarity is an issue. ...
  2. Check the water balance levels. Your second point of call is the water balance. ...
  3. Shock the spa. ...
  4. Try a clarifier. ...
  5. Last resort, empty the spa.
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How much shock do I fill my hot tub with?

Depending on what type of treatment you prefer, you can either use granular pool shock or liquid spa chemicals. I recommend using one cup for every 250 gallons of water once per week.
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What happens if you swim too soon after shocking pool?

If you do not wait for the chemicals used to shock a pool to totally dissolve then you could be placing yourself in serious danger by swimming in it. At the minimum, you will feel itchy skin and eyes because of the chemicals present in the water.
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Can I swim 12 hours after shocking pool?

After Shocking Your Pool

It is safe to swim once your chlorine levels are around 5 ppm or after 24 hours. It is always best to test first!
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Can you swim 6 hours after shocking pool?

For chlorine based pool shocks (calcium hypochlorite, bleach and liquid chlorine), it will be safe to swim in 6 hours and up to 5 days after shocking. It's more important to wait until chlorine levels are below 5 ppm before swimming and the pH is from 7.2 to 7.8, rather than an elapsed time.
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Does spa shock lower pH?

Natural contaminants on your body will lower the pH and make it harder for the chlorine to work. Adding too much shock, especially if the pH is already low, will make it harder to get your water in the proper range. When you add chemicals to your hot tub water, the goal is to keep it clean and clear.
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How long can hot tub water go untreated?

Without sanitizer, the risk of contamination increases with every soak. And sanitizer aside, if the water used to fill the hot tub has poor alkalinity or pH, that can pose a risk immediately. And, if chemicals are being used, it could last 3-4 months before the water needs to be changed.
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When should you shock a spa?

Generally it is recommended that you shock your hot tub once a week – more often if it's seeing heavy use. If your levels are all good, but the water is a bit cloudy or doesn't quite smell right, it's time for a shock. You should also shock the tub if you haven't used it for an extended period of time.
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Is shock better than liquid chlorine?

Liquid chlorine is generally less costly than granular shock and comes in refillable containers, where granular shock does not. Liquid chlorine does not need to dissolve in your water as it is already in liquid form. In addition, liquid chlorine is non-scaling and leaves no residue.
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Why is my pool still cloudy after shocking it?

But if the cloudy water persists long after you've shocked the pool, you're likely having an issue with water balance, circulation, or filtration. Heavy use of a calcium based pool shock (cal-hypo) may increase Calcium Hardness over a period of time, increasing your odds of cloudy water.
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How long should you run filter after shocking pool?

While shocking your pool will help kill any germs any algae, it won't actually get rid of them; for that, you need your filter. So be sure to run your pool filter for at least 24 hours.
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