Pool Shock: When & How Much
Welcome to our discussion on swimming pool shock,; specifically, when should one shock the pool, and how much do I need to add?
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 thats why its called shocking the pool.
What Amount Of Chlorine Shock Do I Add In My Pool
Liquid chlorine or sodium hypochlorite is always around 12.5% chlorine. Regular bleach is less stronger compared to sodium hypochlorite and is always around 8%you will need to use a lot of it, as compared to sodium hypo.
For regular pool sanitization and clearing cloudy water, the right amount of liquid chlorine to add to your pool will depend on your pool size and the percentage of chlorine you are using. For instance, 10 fluid ounces of 12.5% HASA Sani-Clor or Chloro Guard will provide enough liquid chlorine to raise FC on 10,000 gallons of pool water by 1 ppm.
However, if you have severely cloudy pool water with the following signswon’t clear easily after adding a lot of chlorine, high combined chlorine levels , or very low free chlorine and cyanuric acid levelsyou might be having ammonia in your pool, and you need extra work to clear stubborn cloudy pool water caused by ammonia.
For algae treatment, I always recommend using calcium hypochlorite, which is stronger and always comes with around 60% chlorine concentration. To kill algae, you need to triple shock your swimming pool using calcium hypo. For instance, for sanitising a pool using cal hypo , 1 pound of In The Swim cal hypo should work for a 10,000-gallon pool. As such, since you need to triple shock the pool in case of algae breakout, you will need 3 pounds of calcium hypochlorite chlorine shock to kill green, black, and yellow algae in a 10,000-gallon pool.
How Much Bleach Do You Use
Theres no specified amount of bleach to use in your pool. You can only determine the amount of bleach to use by testing the level of chlorine in your pool. Your aim of adding bleach to your pool is to improve the chlorine level to 1-3 PPM to keep your pool free from all contaminants. The reason for this ppm level is that its perfect for swimmers as they dont get to suffer from eye or skin irritation.
The most common bleach used is Clorox because of its concentration level which rests at 5.7% conc. If you dont know the quantity of water your pool holds, you need to do some calculation that will point you in that direction. You need to multiply the length of the pool by the width and the depth. This would give you an estimated volume.;
When you get that estimated volume, you can multiply it by 7.5 for rectangular pools, 6.7 for oval pools, and 5.9 for round pools. This would provide you with the estimated gallons of water your pool contains.
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How Much Shock Do You Put In A Pool
To shock your pool, use 2 pounds of shock for every 10,000 gallons of water, which should raise your chlorine to 10.0 ppm. Depending on your pool, you can use Leslies Power Powder Plus or Leslies Chlor Brite. After shocking the pool, run the circulation system for at least 2 hours before adding an algaecide.25 2017 .
How Much Chlorine To Add To Pool

The basic chlorine to pool water balance is supposed to range between 1 to 3 PPM. To achieve this pool chemistry balance, you will need about 0.00013 ounces of chlorine per gallon of pool water.;
Different swimming pools feature varying sizes. Hence, you will need to perform some simple calculations to figure out the amount of chlorine you need to shock your swimming pool.;
To determine exactly how much chlorine to add to the pool, you need to calculate the size of the pool. On average, a round ring pool 15 feet across and 48 inches tall will hold approximately 4,978 gallons of water. On the other hand, an in-ground pool can hold over 31,000 gallons of water.;
To determine the number of gallons in the swimming pool, measure and multiply the width, average depth and, length, then multiply the value you get by 5.9 for around pool, 6.7 for an oval pool, and 7.5 for a rectangular pool.;
After determining the number of gallons in the swimming pool, the next step is to figure how much chlorine to add to the pool to bring the level to a healthy point. To do this, you will need to use a pool test kit. If you find that the chlorine level is already 1 ppm and you prefer it higher, you will need to add 0.00013 ounces per gallon to raise the level by 1 ppm.;
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Cya = 122 How Much Bleach To Shock A 28000 Gallon Pool
Re: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolRe: CYA = 122 How Much Bleach To Shock a 28,000 Gallon Pool
Re: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolRe: CYA = 122 How Much Bleach To Shock a 28,000 Gallon Pool
Re: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolNot my idea
Re: CYA = 122 How Much Bleach To Shock a 28,000 Gallon Pool
Re: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolRe: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolRe: CYA = 122 How Much Bleach To Shock a 28,000 Gallon Pool
Re: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolRe: CYA = 122 How Much Bleach To Shock a 28,000 Gallon PoolRe: CYA = 122 How Much Bleach To Shock a 28,000 Gallon Pool
dino1956 said:One more thing. If I put Bleach, Liquid Chlorine & the Shock in the Packets in my Pool, will any of that raise my CYA?I’m done with the Chlorine Tabs. Just want to make sure I don’t do something to make it worse.
When To Shock Your Pool And How Often
Shocking your pool is not a one-time thing that you should occasionally do. It is a lifelong process that takes focus and discipline. It would be best if you kept a log by your pool to stay on top of shocking it consistently.
If you are operating on a weekly oxidizing and shocking schedule, you should alternate between a non-chlorine and chlorine shock each week. This system makes chlorine much more effective when it gets implemented, but it will lower the amount of chlorine required.
So, when are the specific circumstances where you must shock the pool?
Rain and thunderstorms are not always things we can plan for, but you should try and shock your pool afterward. While the storm is occurring, your swimming pool will get contaminated by rainwater, debris, and dust. Algae outbreaks are also a key signal for pool shocking. When the algae begin to pop up, you should utilize a shock type with extra chlorination or other cal hypo alternatives.
You should also make sure to shock your pool when you are opening and closing for the season. After you have balanced the other chemicals, you can shock the pool so that you can eliminate any bacteria, make the water clear, and oxidize any particles. Lastly, if you have many people use the pool at once for a party, the water can get contaminated quicker. It is also essential to shock it after these events too.
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How Much Chlorine Does It Take To Shock A 10000 Gallon Pool
2 pounds
Beside this, How much pool shock do I need?
Youll need to first know the amount of water in your pool, give or take a few hundred gallons. If you arent sure, take some measurements and consult an online pool volume calculator. Generally speaking, the dosage amount of pool shock is 1 lb. per 10,000 gallons, but consult the shock package label.
Likewise,;How much shock do I need for a 1000 gallon pool?
0.13 ounces
Also,;How much shock do I need for 10000 gallons?
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.
Can you over shock a pool?
You can, however, use more shock than you need or less than is sufficient. In other words, while you shouldnt worry too much about adding a little extra pool shock, there is still a right way and a wrong way to shock your pool if you want to get the best results.
What Is Pool Shock Anyway
Think back to the last time you walked past a hotel pool. The chemical smell probably knocked your socks off, right? You may think that unmistakable smell is chlorine, but the odor actually comes from chloramines, a sign of improperly balanced water.
Chloramines form when the chlorine in your pool mixes with the nitrogen in sweat, oils, and urine . This is a natural chemical process, basically a byproduct of your chlorine doing its job.
In addition to giving your pool a funky smell, too many chloramines can also irritate your skin, eyes, and respiratory system.
By shocking your pool, youre adding enough chlorine to clean the water and destroy the buildup of chloramines. This process is also called superchlorination.
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How Do I Add Bleach To The Pool Water
Most pool stores do not suggest using simple chlorine as a bleaching agent. They want you to use their products for adding bleach to the water. Most pool specialty stores will sell slow dissolving tablets of chlorine that when combined with other ingredients, stabilize the chlorine, so it releases slower, thus making it last longer. Although this may seem like the easier solution, stabilizing bleach greatly reduces the effectiveness it has on killing the microbes that need to be removed from your pool.
The chemicals that are used in these tablets, such as dichlor, break down very slowly and difficultly and overall you cannot control how much of it is going into the water. Therefore, the new chlorine that is added via tablet will attack the dichlor and immediately be stabilized and will not attack the bacteria that you are trying to eliminate.
The tablet is rendered effectively useless, and in a few weeks, the result will be a cloudy pool. More than likely, you will be stuck in a situation where the pool store will sell you additional expensive products that will not fix your problem. This is a costly mistake.
Do not forget, however, when you add liquid bleach to a pool, you still have to add a small amount of stabilizer, so the sunlight doesnt eliminate the bleach molecules immediately. This step should not be too difficult since you are controlling the amount of stabilizer; you should be able to prevent over stabilization.
Dont Be Shocked You Made It
Now you know why, when, and how to shock a pool. There might be a little math involved, but arent occasional brain teasers good for your memory anyway? Were pretty sure thats true, but we may have forgotten.
Anyway, however you feel about the math, regularly using pool shock can prevent more work in the long run. Its one of the easiest ways to keep bacteria at bay, your water clear, and your pool time fun.
Happy Swimming!
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How To Shock A Swimming Pool
What Is Free Chlorine?
It is unbound chlorine that is “free” to sanitize.
Other Intex Pool Chemicals

Maintaining a good pH level and constant chlorine reading is good enough for some pools, but with small pool filter and high pool use, your water may need additional help. Algaecides are used to prevent algae growth in pool. Added weekly, liquid works to dissolve algae’s outer protective layers, so that chlorine can penetrate. Clarifiers are used to help small pool filters trap tiny particles, coagulating fine contaminants into larger clumps that can be trapped by your Intex Pool filter. Enzymes are used to dissolve oily bather waste and other non – living organic contaminants that make cloudy water and gum up small cartridge filters.
Balance Your Water
* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.
* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions
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Reasons For Shocking A Spa Or Hot Tub
There are only four valid reasons for shocking your spa or hot tub. Its not necessary to shock the spa every time you use it and maybe not even weekly. Shock your spa for these four reasons:
How Long Does Shock Take To Clear A Pool
Always run the pump when shocking the pool and allow it to circulate for 24 hours. The water should then be a blue or cloudy blue color. Test the water 24 hours after shocking and start adjusting pH and alkalinity levels. The chlorine will still be elevated, but over a few days it should stabilize.20 2019 .
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What Is The Best Time Of Day To Shock A Swimming Pool
Shock your pool late in the evening or at night, when the sun is down, to make sure free chlorine will stay in your water longer. Ultraviolet rays from direct sunlight greatly reduces free chlorine levels, so shocking during the day will not be very effective.
If you absolutely must do it during daytime, use a chlorine stabilizer, such as cyanuric acid, to prolong the life the chlorine.
The Importance Of Balanced Pool Water
Balanced pool water is clean, safe, healthy, and comfortable to swim in. And it will prevent damage to your pools structure and equipment.
Too much chlorine will cause skin and eye irritation, and potential illness, while too little will not be effective at killing bacteria, algae, and other contaminants.
If pH levels are too high, the water will become cloudy and create scale deposits on your pool walls and equipment. And if the pH levels are too low, the pool surfaces and equipment will become etched and corroded.
Simply put, unbalanced water can lead to plenty of unwanted issues with your pool. So do yourself and your pool a favour and keep your water balanced.
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When Pool Water Temperature Rises
Bacteria and other organisms such as algae thrive in warm water. In addition, the amount of free chlorine decreases with rising temperatures.
Most pools are kept at a comfortable level of 86-88 °F. The temperature should be lowered to a range of 78-84 °F if there are a lot of swimmers or if the pool is used for athletic activities. You can use a pool thermometer to measure water temperature.
If the temperature rises above the recommended levels, you should shock your pool.