(Assumes pH of 7.5, CYA of 30 ppm, Temperature 75ºF) Dosage per 10,000 gallons:
| Desired Chlorine Level | Cal Hypo | Clorox | Dichlor | Lithium Hypo |
| 10 ppm | 21 oz | 228 oz | 25 oz | 39 oz |
| 20 ppm | 42 oz | 455 oz | 35 oz | 78 oz |
| 30 ppm | 63 oz | 683 oz | 60 oz | 117 oz |
What amount of chlorine will shock a swimming pool?
If the pool is too cloudy and the drain is not visible from the side of the pool it is unsafe to swim. Chlorine between 2-4 ppm Free Chlorine is recommended for residential pools and 3-5 parts per million for commercial. Shocking the pool requires raising the free chlorine over 10ppm.
What chlorine level is dangerous for a pool?
When a pool is superchlorinated, the chlorine level is raised to between 10 ppm and 20 ppm. These levels are unsafe to swim in and can burn or irritate your skin and eyes. When the chlorine level is above the acceptable range of 5 ppm, it’s best to wait before swimming.
What is the proper level of chlorine in a pool?
Here are some of the immediate steps you can take to bring this level down:
- Turn off any automatic chlorine feeders.
- Reassess if your chlorine feeder is the right size for your pool.
- Allow the UV rays to decrease the chlorine level naturally by leaving the pool uncovered. This process might take a few days. ...
- Dilute the pool by adding more water. ...
- Switch to chemicals like sodium carbonate.
How do you neutralize chlorine and pool shock?
[Without Pool Shock]
- Remove dirt and debris out of your pool.
- Add chlorine to raise the free chlorine level to 10 – 30ppm. Maintain that free chlorine level for as long as you need to until your pool water looks clear.
- Do an “Overnight Chlorine Loss Test” to verify that the algae in your pool is dead. ...
Can you put too much chlorine in a pool when shocking?
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.
How much chlorine do you need to shock a green pool?
You will need to quadruple shock your pool by added 4 pounds of shock to every 10,000 gallons of water. This can be expensive if you have a large swimming pool. Just make sure you follow the same procedures.
Is chlorine and shock the same thing?
Chlorine is a sanitizer, and (unless you use Baquacil products) is necessary for maintaining a clear and healthy pool. Shock is chlorine, in a high dose, meant to shock your pool and raise the chlorine level quickly.
How do you shock a pool with chlorine?
1:152:16How To SHOCK a Swimming POOL | Swim University - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo let's pour the shock inside the pool. So that's it all you want to do is you want to pre-dissolveMoreSo let's pour the shock inside the pool. So that's it all you want to do is you want to pre-dissolve each bag in a bucket of water that means water first then put in the shock mix it up with a stick.
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!
How much shock Do I put in a pool calculator?
How much shock do I need to shock my pool? A simple ratio and a standard rule of thumb to follow when you shock your pool is to dissolve one pound of either calcium hypochlorite or sodium dichlor for every 10,000 gallons of pool water.
How much chlorine do I put in a 10000 gallon pool?
about 52-104 ozThe most important factor though is the size of the pool. You'll need about 52-104 oz of liquid chlorine per 10,000 gallons of water. This amount should get the chlorine level to between 5 and 10 ppm.
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.
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.
What time of day should I shock my pool?
eveningThe best time of day to shock your pool is in the evening. This is because the sun's rays can affect the effectiveness of the chlorine by dissolving it too quickly, before it has a chance to rid the pool of contaminants and clean the water.
When Shocking a pool should the pump be on?
Ensure the pool pump is running. Pour the mixture from the bucket into the water around the edges of the pool. Let the pump run for about 6 hours or more and test the water. Don't use the pool right away – wait for the free chlorine levels to drop to 1 – 3 ppm before it is safe to swim.
How long should you wait to swim after shocking pool?
24 hoursAfter you shock the pool — As soon as your chlorine levels reach 5 ppm or lower, it's officially safe to swim. Depending on the type of shock used, as well as the amount used, it can take anywhere from 24 hours or even up to a couple of days.
Types Of Granular Pool Shock
There are three main types of granular pool shock. The most common kind is Calcium Hypochlorite or Cal Hypo, which is the most economical and maintains the power of chlorine shocks needed to clean out a pool.
High Combined Chlorine Levels
Another situation that calls for shocking the pool involves having high levels of combined chlorine. High levels of combined chlorine can render your chlorine ineffective and is responsible for that “chlorine smell” in your pool.
The Types Of Chlorine Shocks
There are three types of chlorine that you can use to shock your pool which are:
Your Pool Water Is Cloudy
Cloudy pool water is an important symptom to treat as it can be a breeding ground for dangerous bacteria, it can also damage your pool and circulation system.
How To Shock A Pool With Liquid Chlorine
Shock your pool! The name seems scary at first if you are a new owner of the pool. However, shocking your pool keeps the pool clean and fresh to swim comfortably.
Why Is My Pool Still Green After Adding Chlorine
Is your pool still green after shock? A common DIY issue. Normally a pool cleaning service or the next step of DIY will tackle these next three things to take your pool back to its crystal clear shape: the filtration system, the correct chemicals, and patience.
How Much Liquid Chlorine Do I Need To Open My Pool
Also asked, how much liquid chlorine do I need for a 30000 gallon pool?
What is shock in pool?
Shocking a pool with liquid chlorine or a granular pool shock kills or inactivates pathogens and algae. Shocking will also oxidize other unwanted materials inhabiting the pool water. By raising the chlorine level in the pool to the correct level, and holding it there for the prescribed amount of time, this effectively disinfects the water. This article covers shocking your pool with two of the most popular shock products on the market today – sodium hypochlorite (liquid chlorine pool shock) and calcium hypochlorite (granular shock).
Why is it important to shock your pool water?
Shocking your pool water is one of the keys to keeping your pool sparkling and ready to swim in. Failing to shock your pool water can lead to algae and bacteria build-up. This creates a swimming pool that is not only uninviting, but hazardous to pool patrons as well. Just because your water is clear, does not mean it is safe to swim in! This is why a high-quality pool testing set from LaMotte or Taylor is an essential part of every pool operator’s kit!
How to find the CAC level?
Subtract your FAC from your TAC to find your Combined Chlorine (CAC) level. (TAC – FAC = CAC) For this example, 3.0 ppm – 1.0 ppm = 2.0 ppm.
What is the strength of sodium hypochlorite?
Normally sold to consumers in gallon bottles, this high-strength product is easy to apply – as long as proper safety measures are taken! Our liquid chlorine is of 12.5% strength. Calcium Hypochlorite.
How long to hold sodium hypochlorite in pool?
Broadcast the sodium hypochlorite directly into your pool water. Hold this level for approx. 16 hours to complete the super chlorination cycle at 20 ppm.
What is the strength of Arch Poolife Turboshock?
Calcium Hypochlorite. This is a granular product that features a high level of available chlorine. (Arch Poolife TurboShock is of 75-78% strength.) This product is sold in easy to use single pound bags, or can also be found in larger pail quantities.
Can you shock a pool with liquid chlorine?
As stated previously, always balance your pool’s pH level BEFORE shocking your pool. Make sure the shock product you are using is up to the task. Liquid pool shock (liquid chlorine) can degrade over time, so make sure your stock is fairly fresh. Granular shock products vary in strength.
How much liquid chlorine do I need for a 10000 gallon pool?
The most important factor though is the size of the pool. You’ll need about 52-104 oz of liquid chlorine per 10,000 gallons of water. This amount should get the chlorine level to between 5 and 10 ppm.
Is liquid chlorine the same as shock?
Liquid chlorine and granular shock have the same active chemical that sanitizes your pool, what changes is the strength and the way you use it. Liquid chlorine is less costly, unstabilized and comes in liquid form. Granular shock is stabilized and comes in a solid form that dissolves in your pool.
What is better liquid chlorine or shock?
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.
Can I shock a pool with liquid chlorine?
12.5% Liquid Chlorine Pool Shock – Normal Dosage: 1 gallon of shock per 10,000 gallons of water. Shock Dosage: 2 gallons of shock per 10,000 gallons of water.
How much liquid chlorine do I put in a 5000 gallon pool?
6 ounces initially per 5,000 gallons and a a maintenance dose of . 75 ounces per 3,000 gallons every week. Initially you will need stabilizer to protect the chlorine from the sun. This is added at a rate of one pound per 3,000 gallons of water.
Is liquid chlorine the same as bleach?
Household bleach (the same as you use for your laundry) and pool chlorine are the same thing. They are identical in every way, with the exception of strength.
Can you over shock a pool?
Although, if you overdo the shock treatment, you risk getting green hair from chlorine due to the excess chlorine oxidizing the copper in the water. You can execute a shock treatment with a few different types of pool shock, just be mindful of how much you’re using.
How many ounces of shock in a 1 pound pool?
Oh, and in case you have forgotten, there are 16 ounces to a 1 pound bag of shock, and 128 ounces in a gallon of bleach.
How to shock a pool?
How to Shock the Pool 1 Clean the Pool. Leaves and debris on the floor and surface will waste your chlorine’s killing power, as it attacks these organic materials, rather than the A-B-C problem that we are trying to correct. 2 Lower the pH. Chlorine is very sluggish at high pH levels. At a pH of 8.0, less than half of the chlorine you add to the water will convert to hypochlorous acid, the killing form of chlorine. Lower the pH to 7.2 before shocking. 3 Read the Label. We have 8 different types of pool shock, all with slightly different dosages. For some pool shock, dilution in a bucket is necessary to dissolve the granules, to prevent damage to pool surfaces. 4 Add the Shock. Distribute the granular chlorine throughout the pool surface, with the pool pump running. Be careful not to spill any on your clothing or the pool deck, and don’t broadcast it into the wind! 5 Brush the Pool. This helps to distribute the chemical, and removes the layer of dust and film on your pool surfaces, which may allow some contaminants to escape treatment. A good brushing, vacuuming and backwashing should follow an algae shock treatment.
How to remove chloramines from pool water?
Raise the chlorine level in your pool high enough and you will break apart these chloramine bonds, removing chloramines from the water. To effectively remove chloramines, many sources say that you need 10 times the amount of combined chlorine, but for complete removal I may double that amount to compensate for stabilizer (cyanuric acid) levels, or after active pool use, or when treating algae.
What does it mean when your pool smells like chlorine?
Although it seems counter intuitive, when your pool smells strongly of chlorine, chloramine bonds are likely at a high level, and a good pool shock is needed. There is another way to determine chloramine levels, however. Using a DPD test kit will allow you to measure both FAC and Total Available Chlorine (TAC).
What is shocking the pool?
Shocking the pool with chlorine is the raising of free chlorine levels in the pool to such a high level that every living thing in the water is killed by cell disruption. I liken the process to a lightning bolt ripping through the water, and perhaps that’s why it’s called shocking the pool.
How much shock to kill algae blooms in pool?
For dark green or yellow algae blooms, adding enough pool shock to reach 30 ppm may be necessary.
How to remove algae from pool?
Using mechanical methods is usually necessary – brushing the walls and floor, vacuuming and backwashing, to remove algae cells from the pool, and flush them out of the system . 2). Kill Bacteria.
How to reduce combined chlorine in pool?
To reduce the amount of combined chlorine it is necessary to shock the swimming pool water to reach the chlorine break point. An easy why to factor the necessary amount of chlorine to shock to hit break point is to increase chlorine ppm ten times the total combined chlorine. To ensure chlorine break point was reached after shocking, total chlorine should equal free chlorine and both should raise in tandem when more chlorine is added.
How often should chlorine be tested in a pool?
Swimming pool chlorine levels should be tested daily or every other day if a chlorine generator is used. Chlorine is constantly being consumed by sunlight and contaminates. It is important not to let the Free Chlorine levels reach zero.
Why does my pool smell like chlorine?
Also called Chloramines, are one of the main sources of discomfort and irritation in a chlorine pool. chloramines cause red itchy eyes, irritated skin and irritated mucous membranes. The bleachy smell around chlorine pools comes from the chloramines or Combined Chlorine in the water. Pools with extremely strong chlorine smells have high levels of combined chlorine and are more likely to lead to swimmer discomfort.
What are the negative effects of chlorine?
Negative effects from high chlorine greatly depend on the amount of Cyanuric Acid (CYA or Stabilizer) present in the water. Swimmer discomfort comes mostly from high levels of Combined Chlorine (CC) and unbalanced pH. Free Chlorine (FC) levels >10ppm should be avoided until it drops.
Why is chlorine free water tested?
Free Chlorine is most commonly tested because it represents the amount of chlorine free in the water for disinfecting. Chlorine is very effective at eliminating most microorganisms in the water that cause disease, bacteria, and algae.
What is the chemical formula for HOCl?
Hypochlorous Acid. Chemical Formula: HOCl. Hypochlorous acid (HOCl) plus Hypochlorite Ion ( OCl-) is what's referred to as "Free Chlorine.". HOCl is the active agent responsible for the oxidation of both organic and inorganic materials in chlorinated water. HOCl is formed when chlorine is dissolved in the water.
What are the effects of low free chlorine?
LOW FREE CHLORINE EFFECTS < 0ppm: There is nothing protecting the pool water from a build of contaminants, parasites, and microorganisms. Leading to an unsafe swimming environment and eventually a cloudy or green pool. If the pool is too cloudy and the drain is not visible from the side of the pool it is unsafe to swim.
How many gallons of shock to superchlorinate pool?
As discussed earlier, the bigger the pool, the more bags of shock that will be required to superchlorinate the water. If this sounds like your pool (anything 30,000 gallons and up), repeat this process as necessary.
How many volts does a pool shock?
As a pool owner, you’re gonna need to learn how to shock a pool. Pool shocking doesn’t mean sending 5000 volts of electricity through the water (although that would be pretty cool to see). However, what it does refer to is the rebalancing of pool chlorine levels, keeping the pool water safe to swim in.
What is non chlorine shock?
Non-Chlorine Shock: Also known as Potassium Monopersulfate (MPS), this is a chlorine-free shock that oxidizes contaminants, but won’t rid the pool of bacteria. Compared to chlorinated shock, you can use MPS shock at any time of day and be swimming in the pool 15 minutes later.
What happens when you shock a pool?
By shocking your pool, you replenish your chlorine level and oxidize chloramines (combined chlorine), which are a gaseous irritant that are hazardous for human consumption.
What is pool shock?
Pool shock is a “super dose” of granular pool chlorine that oxidizes chloramines (combined chlorine) and kills bacteria in the water. Shocking depletes combined chlorine and increases free chlorine . If your chlorine levels are low, a chlorinated shock is required.
Why do you shock a pool at night?
Pool shocking is usually done at night, when the sun no longer shines on the water. This is because UV rays destroy chlorine at near warp speed. Twilight hours give the shock an extended amount of time to effectively kill everything in its path.
Why does my pool smell like chlorine?
Chloramines irritate your eyes, nasal passage, lungs, and skin. If the pool has a very strong chlorine smell to it, you know it’s time to shock.