Sodium hypochlorite pool calculator To shock your pool, test the water, calculate the amount of shock needed, pre-dissolve the chemicals, add the solution to your pool while the pump is running, and wait 24 to 48 hours before swimming. Learn how sodium hypochlorite pool maintenance ensures clean, safe water by effectively killing bacteria and algae; this guide covers proper usage, dosage, and storage tips for optimal results. For the adjustment, we take (TAC – FAC = CAC) x10=BP-FAC. Please select the type of pool shock and your preferred sanitizer, and enter your pool's current free chlorine (FC) and cyanuric acid (CYA) / stabilizer levels below. The chemical compound is highly soluble, meaning that it can dissolve easily in water to create a highly effective disinfectant solution. 36 lbs of sodium hypochlorite into gallons. 25% concentration. 0 kg of available chlorine to achieve superchlorination. com Pool Management Education since 1980 About The purpose of this chlorine dosing calculator is to assist users, typically operators or engineers working with water treatment systems, in determining the appropriate dosage of a chemical, specifically sodium hypochlorite, for achieving a desired chlorine concentration in a water system. To calculate grams of 65% calcium hypochlorite (granular or powdered chlorine) required to disinfect the water in a tank. Chlorine is the most popular disinfectant for swimming pools. Enter the volume of the pool : m³ Once you have calculated the values for your pool, the resulting table can be printed in a handy format using the […] You'll need to know your Combined Chlorine reading in parts per million (PPM) before you can use the Shock Calculator. Calcium hypochlorite can be in the form of tablets, pellets, or powder. 0 and the TAC is 2. The information provided from these conversion calculators is based on data obtained by our own research and is considered accurate. Sodium Carbonate. The calculation performed in this tool is based on the following equation: C1 x V1 = C2 x V2. C2 is the concentration of the diluted bleach solution you are preparing. The following are commonly employed methods to calculate the required sodium hypochlorite dose. , liquid chlorine, the ratio comes out to 10 ounces for every 10,000 gallons of pool water. Welcome to our Swimming Pool Dosage Calculator, designed to make your water maintenance a breeze! Simply input your swimming pool, swimspa or hot tub size, and our calculator will provide you with the volume of water in gallons, litres and m3 as well as the precise dosage of chemicals needed to keep your water balanced and crystal clear. sodium hypochlorite out, but we should use gallons as our measurement! So we just convert the 7. After providing these details, click the 'Calculate!' button. However, no warranty/guarantee is expressed or implied regarding the accuracy of this data or the use of these conversion calculators. Apr 15, 2024 · These different types include sodium hypochlorite and calcium hypochlorite, along with chlorine-free oxidising shocks. 14). Nov 21, 2024 · With over 400,000 members, TFP is the largest and most influential pool & spa website on the Internet. Sodium Sesquicarbonate. Calculator Instructions Calculate your pool volume; General maintenance or algae problem? Calculate the amount of shock you need; Calculate Your Pool Volume. It is generally 65% to 70% strength. While the lack of calcium may help with pool hardness, using Sodium Dichlor as a pool shock can cause Cyanuric Acid levels to rise. Regardless of the strength of the product you use, we generically refer to all of these products as “bleach” or “SH” for use in this calculator. It is sold as a 10-12. Sodium hypochlorite weighs about the same as water, so we do not have to make a change in weight due to its density. It is just a stronger version of the household Bleach, which is a 6% solution. Aug 4, 2023 · What is Sodium Hypochlorite (Liquid Chlorine) And its Characteristics? Sodium hypochlorite (formula: NaOCl), or liquid chlorine, is a liquid chemical compound created from reacting chlorine with a sodium hydroxide solution. The next thing to do is calculate how much calcium hypochlorite/sodium hypochlorite you need to add in order to increase the free chlorine reading by 1mg/l. 5. Free Chlorine is most commonly tested because it represents the amount of chlorine free for disinfecting. Jan 3, 2025 · Sodium Hypochlorite (Liquid Chlorine) is the salt of Sodium with Hypochlorous Acid. 732-451-1040 info@pooloperationmanagement. Its ability to effectively kill bacteria, viruses, and fungi makes it a staple in cleaning and sanitation efforts worldwide. 047 to 3. We recommend shocking with either Calcium Hypochlorite (un-stabalized granular only, not tablets) or with Liquid Chlorine (Sodium Hypochlorite). May 27, 2025 · Shocking a pool involves adding a large dose of chlorine or non-chlorine oxidizer to quickly eliminate contaminants, algae, and chloramines. Formula with Variables Description Shock your pool! This tool will tell you what you need to do in order to correctly shock your pool. What is Liquid Bleach (Sodium Hypochlorite)? Sodium Hypochlorite, commonly referred to as liquid bleach, is a liquid sanitizer that is both very common among pool professionals and cost effective. It is being practiced by thousands of pool owners just like you. Quickly get answers for how much chlorine to add to the pool or how to balance the pool ph and alkalinity To determine the appropriate amount of sodium hypochlorite to add for disinfection, a variety of formulas can be used. Equations 1B & 2B: Volume (ounces) of 12. Aug 22, 2023 · The sodium hypochlorite pool shock calculator takes into consideration the pool’s volume, desired chlorine level, and available chlorine percentage in the sodium hypochlorite product. Commercial Grade pool shock. Calcium Hypochlorite (67%) Sodium Hypochlorite (12%) Dichlor (56%) Increase Total Alkalinity: Sodium Bicarbonate: Decrease Total Alkalinity: Muriatic Acid Sodium Bisulfate: Increase Calcium Hardness: Calcium Chloride (77%) Increase Stabilizer: Cyanuric Acid: Neutralize Chlorine: Sodium Thiosulfate Calculator. 5% by weight sodium hypochlorite is also used for water disinfection. Dealing with pools has allowed TFP to become the original authors of the best calculator on the net. Amount Conversions: oz → lb. This is what you are trying to calculate. 2 gm/ml. 14 hours ago · Pool Volume: Calculate your pool’s volume in gallons. How Often Should You Shock Your Swimming Pool? The frequency at which you shock your pool will depend on a couple of things. For example: To achieve 5 mg/L chlorine in a 1000 litre tank add approximately 8 grams of 65% calcium hypochlorite. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. 0 ppm (mg/l)? Obtain the dosage to treat 10,000 gallons with a desired change of 1 ppm from Dec 12, 2016 · Here are the current pool chemicals available in the DigiQuatics pool chemical calculator: To increase pool chlorine: Chlorine Gas. Jan 3, 2025 · A pool shock calculator is an invaluable tool that makes it easy to determine the amount of shock to add to your pool based on specific factors such as pool size, current chlorine levels, and the type of shock being used. The right amount of sodium hypochlorite depends on the pool size, how many people use it, and how often the water is changed. Adding of . Liquid hypochlorite (sodium hypochlorite) is supplied as a clear, greenish-yellow liquid in strengths from 5. It kills harmful bacteria, viruses, and algae, making the pool safe and fun for everyone. 5. How much Sodium Hypochlorite will it take to reach breakpoint for a 95,000 gallon pool, if the FAC is 1. ) by 0. How much sodium hypochlorite must be added to a pool containing 40,000 gallons of water to raise the chlorine level to 3. Bleach, specifically sodium hypochlorite, is a powerful disinfectant widely used in households, healthcare facilities, and various industries. com Pool Management Education since 1980 Use our pool shock dosage calculator to determine the precise amount of shock needed for your pool, covering factors like pool size, current chlorine levels, and This tool was developed to assist Environmental Health Officers, food establishment operators, care facility operators, swimming pool operators, and the public to prepare the appropriate concentration of chlorine solution using bleach (sodium hypochlorite). For swimming pool use, it generally comes in gallon jugs ranging in strength from 10% or 12. 5% sodium hypochlorite. If you don’t know that number already, use my pool volume calculator below to figure out the approximate gallons of water in your pool. You should keep your pool or spa Free Available Chlorine (FAC) level between 2. Often referred to as "bleach", it is, in fact, used for bleaching. 65. 5% NaOCl added to 10 gallons of water for target solution strength (valid between 0. After calculating the pool volume gallons, use the other calculators to help balance the chemicals. Following this, you can use the chlorine dosing calculators to work out the required chemical dose to increase the amount of chlorine in the water. Bleach dilution ratios for disinfecting: 1% Bleach solution Jan 3, 2025 · Austin's Pool Tech Pool Shock. Chlorine is very effective at eliminating most microorganisms in the water that Most liquid chlorine is sodium hypochlorite, which has an available chlorine of 125 g/L, so you would need to dose 800 mL into your pool. 7% muriatic acid 31. 0 parts per million (PPM). Pool Volume: If you do not know your pool volume please visit our Basic Pool Calculator. Once you know the size of your pool, you can use the general rule of 1 gallon of 15% liquid sodium hypochlorite for every 10, 000 gallons of water in your pool. Calculation Formula Use the sodium thiosulfate pool calculator to determine the correct dosage for neutralizing chlorine in your pool, ensuring safe and balanced water chemistry without over-treatment. Dec 17, 2022 · Most household bleaches contain between 5% and 8% sodium hypochlorite. Pool professionals like liquid chlorine because they can add it in bulk, making it a Calculating Hypochlorite Solution Feed Rate. C1 is the initial concentration of the bleach (sodium hypochlorite) solution. Required Data Entry The volume of water is (1 to 9,999,999 gallons) gallons. It simplifies the complex task of determining the correct amount of sodium hypochlorite required for pool shock treatment. 5 (where π ≈ 3. The basic formula for calculating the dose of sodium hypochlorite can be represented as follows: Oct 3, 2024 · Bleach, primarily composed of sodium hypochlorite, has been used as a disinfectant since the 18th century. 25 to 16% available chlorine. This tool was developed to assist Environmental Health Officers, food establishment operators, care facility operators, swimming pool operators, and the public to prepare the appropriate concentration of chlorine solution using bleach (sodium hypochlorite). fl oz → gal. That translates to 12% by weight available chlorine content. This calculator streamlines the process, ensuring you mix the right amounts of chlorine and water to create a safe and effective solution. Note: The equations for sodium hypochlorite solution strength preparation are based on mixing 12. Test chlorine levels 2-3 times per week; Add chlorine in the evening for better effectiveness; Maintain pH between 7. Understanding Bleach Dilution. This calculator can be used to adjust the chlorine concentration of water to disinfect it for drinking and also for other applications. Recommended bleach type: 1% concentration of sodium hypochlorite (instructions for 5-6% concentration are also available below) General advice: If the water is a weird color or very cold, double the amount of bleach. Calcium Hypochlorite (67%) Sodium Hypochlorite (12%) Lithium Hypochlorite. e. Shock and sanitize your pool by pouring this liquid shock directly into your swimming pool. Mar 23, 2024 · A chlorine calculator PPM (parts per million) is a valuable tool designed to help you calculate the exact amount of chlorine needed to achieve a specific chlorine concentration in water. For a circular pool, use the formula: π x Radius² x Average Depth x 7. ORP – Oxidation Reduction Potential A kind of sensor that reacts to disinfecting chlorine levels which is used in some systems that automatically feed chlorine into the pool based on the sensor’s measurement of the current chlorine level in the pool. Horizon Liqui-Chlor 15 (Sodium 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. /gal % strength of HTH Top part of equation calculates lbs of pure Cl Dividing by % strength gives weight of material needed. Recommended Liquid Chlorine Jul 15, 2011 · You will need to know the Combined Chlorine reading in PPM before you can use the Shock Calculator. Reading Ideal Chemical Jan 3, 2025 · Sodium Hypochlorite (Liquid Chlorine) Sodium Hypochlorite (Liquid Chlorine) is the salt of Sodium with Hypochlorous Acid. 6 for optimal chlorine efficiency Bleach with a higher percentages of sodium hypochlorite is more effective and easier to carry. Chlorinating liquid or pool shock typically contains between 10% and 12. Bleach Concentration: Check the percentage of sodium hypochlorite on the bleach label. If you are using sodium hypochlorite, i. The amount of chlorine required to be 5 to 10 5 10 Swimming pool water disinfection (new pool or spring startup) 5 Jul 23, 2024 · For this chlorine calculator, the strengths for liquid chlorine and calcium hypochlorite (cal-hypo) will need to be manually entered because they come in a variety of strengths. Otherwise, trichlor (90%), dichlor (56%), and lithium hypochlorite (35%) have default strengths. To Commercial solid calcium hypochlorite typically has 65% by weight available chlorine. Basic Dosing Formula . 5% NaOCl (w/w) to 10 gallons of water. Be conscious of the effects to the cyanuric acid levels in your pool. Lithium Hypochlorite. Calcium hypochlorite (Cal-Hypo) is one of the most popular and powerful types of pool Sodium hypochlorite contains around 125 g/L of available chlorine, so you typically need to dose a fair bit to shock a pool properly. All these information is used to make this calculator. Aug 6, 2024 · Keeping a swimming pool safe and clean is key. 12. 5% solution of Sodium Hypochlorite in water, hence the name Liquid Chlorine. It's density is 1. For a rectangular pool, use the formula: Length x Width x Average Depth x 7. This calculator can be used to adjust the chlorine concentration of water to disinfect it for drinking and also for other . Looking for a pool calculator to help you calculate exactly what chemicals you will need to keep your pool water safe and sanitary? 732-451-1040 info@pooloperationmanagement. 25% available chlorine. Our handy bleach dilution calculator is designed to help users determine the correct proportions of bleach and water for various disinfecting purposes. 45% muriatic acid dry acid washing soda or soda ash borax (20 Mule Team) sodium tetraborate pentahydrate caustic soda (lye) baking soda calcium chloride calcium Check pool chlorine levels often. 5% Sodium Hypochlorite). 5% NaOCl, w/v): Discover the pool calculator behind the perfect pool, PoolMath. There are three main measurements for chlorine, Free Chlorine(FC), Combined Chlorine(CC), ad Total Chlorine(TC). We are a registered 501(c)3 non-profit that is funded by user donations. If you used solid chlorine granules in the form of calcium hypochlorite, with an available chlorine of 700 g/L, you would need to dose about 140 g into your pool. 2-7. Your turn! This one is for you to do! PROBLEM 1: You calculate that you will The next thing to do is calculate how much calcium hypochlorite/sodium hypochlorite you need to add in order to increase the free chlorine reading by 1mg/l. 5%. 34 lbs. May 26, 2024 · Sodium Hypochlorite Pool Calculator Pool Volume (liters): Desired Chlorine Increase (mg/L): Calculate Here's a table with estimations for the amount of sodium hypochlorite needed to achieve different chlorine concentration increases in a pool, based on the volume of the pool and assuming a 12% sodium hypochlorite solution. Calcium Hypochlorite (high test hypochlorite or HTH) Lbs/day = Flow in MGD x Dose in mg/L x 8. We recommend shocking with either Calcium Hypochlorite (granular only, not tablets) or with Liquid Chlorine (Sodium Hypochlorite). This Apr 7, 2025 · To calculate the amount of liquid sodium hypochlorite needed to shock your pool, you first need to determine the size of your pool in gallons. In fact, it is the least expensive form of chlorine sanitizer. 💡 Pro Tips. 0 & 10. The calculator helps determine that you need to mix 1 part bleach with 51 parts water. To help you better understand the calculator and keep your water clean and clear, you should also view the following: ABC's of Pool Water Chemistry Nov 8, 2024 · Liquid chlorine, also known as sodium hypochlorite, is a common form of pool shock that is highly effective at killing bacteria, viruses, and other harmful organisms that can accumulate in pool water. Use the dosing calculator to work out how much of the appropriate chemical you need to add to your pool to increase or decrease the concentration. Knowing the pool volume is extremely important when adding chemicals to the water to adjust pool chlorine, pool pH, pool stabilizer, pool alkalinity, pool salt and other chemical levels. See full list on poolresearch. This is particularly useful for pool owners, water treatment professionals, and anyone responsible for maintaining water systems. Chlorine (sodium hypochlorite) solutions should be used mainly on hard, non-porous surfaces. 1% sodium hypochlorite solution using household bleach with 5. The right amount of sodium hypochlorite, or pool chlorine, is crucial. Easy-to-use, fast, and effective. As an example, if using 65% chlorine strength calcium hypochlorite granules begin by dividing the pool volume figure (from step 1. This information is used to make this calculator. V1 is the volume of the bleach to be diluted with water. To increase pool alkalinity: Sodium Bicarbonate. Please note the above calculations are only estimates. Liquid Chlorine / Chlorinator (12. Dichlor (62%) Dichlor (56%) Trichlor. Check the expiration dates of your bleach or chemical sanitiser to ensure the active ingredients are still effective. 1. Generally, it’s recommended you add shock to your pool: When first filling up your pool. Suppose you need to create a 0. As an example, for a 50,000 L pool with a combined chlorine level of 2 ppm, you would need to add 1. Household bleach typically This trusty chemical adjustment calculator tells you what you need to know. 5% bleach trichlor dichlor 48% cal-hypo 53% cal-hypo 65% cal-hypo 73% cal-hypo lithium hypochlorite chlorine gas 15. Lithium Hypochlorite is a type of liquid pool shock. Chlorine (sodium hypochlorite) soutions must be made up prior to use as the chlorine deteriorates over time. com Just enter the dimensions of your pool (in metres) and the calculator will work out the approximate volume of your pool (a metric converter is provided to aid you with this). The amount of pool shock you need depends on the size of your pool in gallons. 25% bleach 6% bleach 10% bleach 12. Common household bleach is a solution of sodium hypochlorite containing 5. 3. 0? STEP 1: Adjustment. idlil jij wjqp ywv jrivvq ukpq lfaq gfbyqy hzwqh hitkuowy