corrosive. But if we have low total alkalinity in our pools, the pH will bounce around wildly, even with minimal factors influencing it. Powdered or granulated calcium hypochlorite is an effective option for chlorine disinfection. The ideal range for calcium hardness is 250-350 ppm. It will slightly raise your pH, so make sure you adjust pH while using it. 3.3 qts. Calcium stabilized chlorine will increase your water calcium hardness each time it is used, while dichloro and trichloro will increase the cyanuric acid (stabilizer) in your water. One explanation is that all water, even drinking water, contains calcium; not in large amounts, obviously, but it does. Minimally, using a respirator, and eye protection will keep you safe. 10. al The Effect of Addition of Calcium Hypochlorite … May 2014; Vol. The relative amounts of hypochlorous acid and hypochlorite will depend on pH. contact with other materials may cause fire. Alkalinity and calcium hardness don’t fluctuate nearly as much as pH or chlorine so monitoring them only needs to be done once a day, and can be checked using a titration kit, or a photometer. When calcium carbonate precipitates, it uses up a fixed ratio of calcium and carbonate (1:1, or about 20 ppm of calcium for each 1 meq/L (2.8 dKH) of alkalinity). Since calcium ions cannot be effortlessly removed from pool water, it is important to know the calcium substance of the source water. In this video, we talk about the difference between Di-Chlor and Cal-Hypo (both of which can be used to shock your pool). This is because your water will start to “crave” calcium and start eating away at the materials that contain it. The 10 Best Hotel Pools From Around the World, Robotic Pool Cleaner Comparison: Our Top 20. You can either mix the crushed coral with your gravel or position it in a media bag. Technical name is Sodium Dichloro-S-Triazinetrione, Di-Chlor has 55% free and available chlorine to fight algae in your pool, The Di-Chlor Shock we sell is 99% Sodium Dichlor, which means 54.8% free chlorine, Di-Chlor also contains Cyanuric Acid (CYA) which acts like sunscreen for your chlorine, If your CYA is already high, then Di-Chlor is probably not the best option for you, For ever 1ppm of FC added, Di-Chlor will increase CYA by 0.9ppm, Cal-Hypo has 99.18% free and available chlorine to fight algae in your pool, The Cal-Hypo Shock we sell is 68% Calcium Hypochlorite, which means 67.4% free chlorine, Cal-Hypo contains calcium, which will increase the calcium hardness (CH) level in your pool, For every 1ppm of FC added, Cal-Hypo will increase CH by 0.7ppm. You can use bleach from a local store if you prefer, but remember to check the strength! PPM. You can raise water's calcium hardness easily by adding calcium chloride (CaCl 2). Well then, it would seem it’s important to keep our pH in check. So check those calcium levels, adjust as needed, avoid expensive repairs and…oh yeah, keep swimming! Calcium hardness is increased by the addition of hydrated calcium chloride, a readily available form of calcium salt. Keeping calcium hardness in balance is one of three important water balancing steps. Not only is sodium hypochlorite calcium-free, but it also does have as much available chlorine. Adjusting Hardness. Remember how our recommended form of adding chlorine was by using calcium hypochlorite? Rather, chemical disinfection with sodium or calcium hypochlorite is a preferred alternative because it can be implemented at all levels from municipal or community reservoirs through distribution systems to household storage containers. Lower (Neutralize) Chlorine Level. Neutralize Chlorine : Sodium Thiosulfate . How to Test for Calcium in a Hot Tub. PPM. Calcium hypochlorite is soluble (18 percent or 1.5 lb/gallon) in water, forming hypochlorous acid and hypochlorite ion or free available chlorine (FAC). Use 10 pounds of calcium chloride (80% CaCI2) for each 10,000 gallons of water to raise the calcium hardness 80 ppm. What this leads to though is a wasteful usage of chemicals. When these chemicals are added to pool water, they clearly increase available chlorine, however they also affect pH, alkalinity and either calcium hardness or cyanuric acid levels. Calcium Hypochlorite is a white powder, granule, or pellet with a strong Chlorine-like odor. It sounds … Cal-Hypo has 99.18% free and available chlorine to fight algae in your pool The Cal-Hypo Shock we sell is 68% Calcium Hypochlorite, which means 67.4% free chlorine Cal-Hypo contains calcium, which will increase the calcium hardness (CH) level in your pool For every 1ppm of FC added, Cal-Hypo will increase CH by 0.7ppm Raise Hardness. They aren’t the two main stars, like chlorine and pH, but nevertheless they play an important role in keeping your pool water clean and safe! Raise Total Alkalinity. This compound is relatively stable and has greater available chlorine than sodium hypochlorite … Not only is sodium hypochlorite calcium-free, but it also does have as much available chlorine. Use 1 1/4 pounds of product per every 10,000 gallons of water if you need to raise the level by 10 ppm. It will also boost your water’s pH. Cal-hypo is sold as either a solid or a pre-diluted liquid and is about 65% in chlorine strength. Calculators « Back to Resources. Neutralize Chlorine : Sodium Thiosulfate . The additional calcium in calcium hypochlorite adds to your pool’s calcium hardness levels – and when there is an excessive amount of calcium in the pool, you will begin to see cloudy water. Crushed coral will increase the hardness of your water because it is extremely high in calcium carbonate. It makes sense to me that which ever one can supply the most hypochlorite… 1,000. Alkalinity utilizes sodium bicarbonate. strong oxidizer. 8.5 lbs. Calcium hardness is the amount of dissolved calcium in the water. My current Calcium Hardness is. A close relative of calcium hypochlorite is sodium hypochlorite, commonly known as bleach. Water is hungry, and water that doesn’t have the calcium it desires will try to leach it out of anything it comes into contact with. You must maintain a chlorine residual of at least 10 mg/L for 24 hours after the tank is filled for proper disinfection. We recommend the TF-100 test kit by TFTestkits. I want my Calcium Hardness to be. It's used widely in the food production industry to improve stability and increase food firmness. Because it contains calcium, though, pools in areas with very high calcium hardness levels and calcium scale tend to steer away from this product. The ideal range for calcium hardness in swimming pools is 150-400 ppm (parts per million), so if you try to keep your calcium … 11 lbs. Although Calcium Hypochlorite does not contain Cyanuric acid, prolonged use of Calcium Hypochlorite will raise your Calcium Hardness levels in your pool. It won’t contribute to cyanuric acid or salt levels (sodium), but it does increase calcium hardness levels in the pool, … It has a usable shelf life of up to 10 years. ; Using Calcium Chloride to Raise Calcium Hardness Once full, getting your pool to 250 ppm is important; from there if you’re using calcium hypochlorite to add chlorine to your pool your calcium hardness will steadily increase. Now you may be saying, “wait a second, I use that at home!” And you’re correct, sodium bicarbonate is baking soda, however I would NOT recommend using the industrial strength stuff we use in the pools to bake with at home. Not to mention if we add people to that equation! The volume of my pool/spa is. As a matter of fact, many commercial pools that use calcium hypochlorite (cal hypo) chlorine routinely maintain calcium levels over 700 ppm without scale problems. Sign up here to get updates about the e-book as we get closer to releasing it! Reducing Calcium Hardness in Pools Moreover, the percentage of chlorine in calcium hypochlorite is 65 and is sold as a solid or pre-diluted liquid. I want my Calcium Hardness to be. Well, obviously when we dissolve and add that to your pool, it adds chlorine, but it also adds the calcium used to bind the chlorine! Whether it’s getting it from your pool shell, your paint, your piping, or even the inner workings of your pumps! The calcium hardness could get out of hand very quickly, especially if you're weekly shocking your pool. worn. Understanding Calcium Hardness. 1.3 lbs. Outside of the pool world you can find him enjoying life with friends, family and his off the wall dog Brixton. The primary way we get larger amounts of dissolved calcium in our pools is from our chlorine. Increase … !” That is a valid question, and one that’s easily explained! You have three options: Test Strips: This is the quickest and easiest hot tub water testing method. High Calcium Hardness. 1.4 lbs. Since the product contains a higher percentage of calcium so the pools in areas where supply water has a problem of calcium hardness or calcium scale tend to steer away from the calcium hypochlorite product. After 24h, each specimen was sub-jected to Rockwell hardness testing in a hardness tester (Hardness Tester 751, Instron Wolpert, UK) using a 1.16 inch diameter metal ball indenter with a primary load of 3kg and final … You must maintain a chlorine residual of at least 10 mg/L for 24 hours after the tank is filled for proper disinfection. Calcium hypochlorite is cost effective, but will increase the calcium hardness of the pool water, with each application. 2 oz. If your CYA and CH levels are both high, you have another options. Sodium hypochlorite: Liquid shock, liquid chlorine, bleach, pool shock: Minor pH rise: Now or regular upkeep: Calcium hypochlorite: Pool shock, chlorinating shock, power powder, cal-hypo. Sophisticated science aside, it contributes to the stability of pH in your pool. A low-voltage direct current (≈40 V) is passed through the process water in the electrolyzer to produce a hypochlorite solution … 26, No. The laboratory says that the Calcium hypochlorite is more stable than sodium hypochlorite, and contains a higher chlorine concentration (30-75%). Two forms are sold: hydrated (77% strength) and anhydrous (100% strength). - is a salt of Calcium and Chlorine - chemical formula CaCl², used in pools and spas to increase Calcium Hardness.It has lots of uses in industry: - from accelerating cement set times, drying gases, … Shock (Superchlorination) Raise Chlorine Level. 10 oz. While sodium bicarbonate is certainly not going to hurt you if it comes into contact with your skin, precautions should still be used. The laboratory says that the Areas that contain higher levels of calcium hardness might not react as well to calcium hypochlorite. Low calcium hardness levels can cause etching (or pitting) in the plaster or cement in and around your pool or hot tub. Also, you don’t have to worry about calcium hardness issues since it doesn’t contain any calcium (like calcium hypochlorite), and they’re among the cheapest types of chlorine on the market. causes burns to any area of contact. There is no way to lower calcium hardness other than expensive chemicals that are unnecessary, or by replacing portions (or all) of your pool water with fresh water. High calcium hardness levels can start to cause buildup or scaling on hot tub equipment. Prevents water from becoming corrosive and damaging pool's plumbing and heater. PPM. 0.9 lbs. Calcium hypochlorite contains calcium, and sodium hypochlorite does not have it. Again, ensure the kit tests for calcium or total hardness. All rights reserved. Neglected calcium levels in your pool often are low, but can be skewed high as well if you’re not doing some routine monitoring. Calcium Hypochlorite (67%) 2 oz. Robotic Pool Cleaners are one of the most popular items we sell here at PoolSupplyWorld. RE: Sodium Hypochlorite Dosing & Calcium Deposits QualityTime (Civil/Environmental) 30 Dec 13 20:13 The Lake Ontario water I conditioned at my water treatment plant had an alkalinity of 110 mg/L as CaCO3, a hardness of 135 mg/L as CaCO3 and the pH could vary from 7.9 to 8.3. Calcium Hypochlorite (67%) 2 oz. If you increase any of these factors, the LSI value rises: pH; Water Temperature; Calcium Hardness; Carbonate Alkalinity; And if you increase these factors, the LSI value lowers: Cyanuric Acid (stabilizer) … Too much calcium can be a bad thing, and cause scale. Pools with a Salt Water Generator (SWG) : 60 – 80 ppm Pools without a Salt Water Generator : 30 – 50 ppm. Reader note: An edited version of this article originally appeared in the summer 2007 issue of The Edge, a publication of the Northeast Spa & Pool Association.. Calcium hardness must be actively managed—along with pH and total alkalinity—to keep water in proper chemical balance. The water used for saturation and dilution must be as free from calcium and magnesium ions as possible with a hardness <35 mg CaCO 3 L −1 and so may require to be softened before use. Too much calcium can be a bad thing, and cause … But that doesn’t mean we need to adjust alkalinity, right? 1 … 5,000. Instead, opt for a sodium dichlor or sodium hypochlorite shock treatment to avoid excessive calcium hardness levels. Cal hypo provides excellent water clarity while destroying contaminants in pool and spa water such as those found in sweat, urine and windblown debris. The result of this would be brittle and breaking pool equipment and surfaces! Calcium Chloride usage to increase Calcium Hardness in pools. See your local water professional, but generally calcium levels in the range of 200 to 400 ppm (that’s parts per million) is where you want to be. There is no real reason to lower your hardness. Until, that is, we realize that what we added was too effective, and now we need to raise pH. Calcium hypochlorite is sold as “pool shock.” It is commonly found in a powder or granulated form containing 68% calcium hypochlorite and other salts. Lithium, Dichlor or non-chlorine shock can be used as alternative pool shocks, that won’t add calcium to the pool. If you live in an area that has softer water, then I'd say calcium hypochlorite might be a good choice for your weekly pool maintenance. Controlling Calcium Hardness. Once full, getting your pool to 250 ppm is important; from there if you’re using calcium hypochlorite to add chlorine to your pool your calcium hardness will steadily increase. Increase Total Alkalinity : Sodium Bicarbonate . A good way to track your alkalinity and calcium hardness levels over time, is using the Chemical Records Module in DigiQuatics. 1.3 oz. Lithium shock uses lithium as a filler instead of the calcium, which makes this product dissolve in water much quicker and does not affect the calcium hardness … © 2020 PoolSupplyWorld®. Sodium Bicarbonate Raises total alkalinity To increase 20 ppm To increase 40 ppm To increase 60 ppm To increase 80 ppm To increase 100 ppm 2.8 lbs. Note: If your CH level is too high, you run the risk of getting calcium scaling. Hard water at home means that it has higher amounts of dissolved calcium in the water, whereas soft water has low to no calcium. Ideally, you’ll want to maintain your calcium hardness levels in the right … Related: Calcium Hardness Control 7lb Availability: In-Store and Online at E-Z Test Pool Supplies Its melts at 176 o C and boils at 1935 o C (anhydrous). Increase Total Alkalinity : Sodium Bicarbonate . Areas that contain higher levels of calcium hardness might not react as well to calcium hypochlorite. Increase Calcium Hardness : Calcium Chloride 77% . Scaling. Melted snow or rain – Such water can decrease the level of calcium in your pool if it gets into your swimming pool. Tips for Maintaining Your Calcium Hardness Levels in the Right Range. Features:Hardness Increaser is used to raise the calcium hardness level in the pool to the ideal range. If your pools calcium hardness level drops below the recommended 150 ppm the easiest and most common way to raise swimming pool calcium hardness is by adding a calcium hardness increaser such as calcium chloride to your swimming pool. Gallonage of pool or spa. Liquid Chlorine will add free chlorine (FC) to your swimming pool without increasing your CYA or CH levels. 50,000> 100,000. Central Telefónica (+511) 610-3333 anexo 1249 / 920 014 486 Potassium monopersulfate or non-chlorine shock does not add unwanted byproducts, but is the least cost effective. You will use 22 oz. Vinyl Pools : 0 – 350 ppm (You don’t need any CH, but up to 350 wont hurt anything) Plaster Pools : 250 – 350 ppm. 1.6 lbs. I need to add this much Hardness Increaser (Calcium Chloride Flake) to correct the Calcium Hardness of my pool/spa: ... Calcium Hypochlorite (granular or PPG Accu-Tabs) Dichlor … available chlorine calcium hypochlorite granules into the water as it fills the storage tank. This article addresses potential costs associated with two commonly used sanitizers: calcium hypochlorite (or cal hypo) and trichloroisocyanuric acid (or trichlor). 3.3 qts. Calcium on the low and high end of the scales will eventually cause problems and when they do, be ready for some … Calcium chloride on the other hand, when mixed with water, has an exothermic reaction, which is to say, it gets hot! Raises calcium hardness: Now or regular upkeep: Sodium Dichloro-s-triazinetrione: Quick dissolve shock, chlor brite, dichlor. Alkalinity will naturally dissipate, and adding muriatic acid lowers pH naturally. It is sold in granular or in pucks/tablets. gallons. Use 2 1/2 pounds (per 10,000 gallons) to raise the level by 20 ppm, or use 6 1/4 pounds of product (per 10,000 gallons) to raise the hardness level by 50 ppm. There is no real reason to lower your hardness. 88 Hypochlorite-treated water retains residual free chlorine, so that if V. cholerae … calcium hypochlorite 65 – 70% avcl 7778-54-3 100% yes 3. hazard identification emergency overview danger! Di-Chlor vs Cal-Hypo covers the side-effects of each so you can determine which option is ideal for you! For these two chemical readings there are two chemicals that we use to adjust them, and ensure your pool keeps running smooth and efficiently! This ratio is the same as corals use to deposit their calcium carbonate skeletons. Hypochlorite Increases chlorine level Approx. How to Raise Hardness in a Pool If your swimming pool doesn’t have enough calcium, you can add a pool water hardness increaser to the water easily raises calcium levels. Since the product contains a higher percentage of calcium so the pools in areas where supply water has a problem of calcium hardness or calcium scale tend to steer away from the calcium hypochlorite product. Chlorine Gas. Have any questions or experience with these chemicals? Measure out enough calcium chloride to raise the hardness level. 20,000. The calcium hardness should be maintained between 150 and 1000 ppm as CaCO3 in swimming pools. 1.3 lbs. Stops staining and etching of pool surfaces caused by low hardness levels. You can buy a bucket of granular hardness increaser at just about any swimming pool retailer. 5.5 lbs. Calcium Chloride is the salt formed when Calcium and 2 Chlorine molecules combine. Note: If you let your CYA get too high, your chlorine will lose effectiveness to fight algae. But let's not forget that salt and sodium hypochlorite (bleach) also raise pH, and high pH drives calcium out of solution too. You can buy i… Check the chart to see how much Calcium Chloride is needed to raise the CH level as desired. Calcium Hardness is raised by use of the chemical calcium chloride. 1.2 lbs. Helpful Information, treatments and solutions for solving calcium hardness problems in swimming pools. The A sk A lan AQ uestion .com Website. 13 oz. Calcium Chloride 100% . Scale is not a function of calcium hardness alone, but of calcium carbonate (CaCO 3) saturation, as measured on the LSI. It is used to kill algae and bacteria, in bleach and in pool chemical products. Calcium hypochlorite will be added at levels (as Ca(OCl)2 or measured as free chlorine) not to exceed (1) 400 ppm in water used in processing fruits, vegetables, and nuts; (2) 50 ppm in water used in the chiller, eviscerating line, and on-line reprocessing line for poultry; (3) 250 ppm in scalder water for poultry; (4) 5 ppm … If your CYA is too low, then your chlorine will burn off from the sun very quickly. (This is a math portion of Method 1 for disinfecting a water storage tank.) Actually it does. Rather than the active ingredient Calcium Hypochlorite that is found in common Pool Shock, Lithium Shock contains Lithium Hypochlorite. Calcium hardness should be kept at 250 ppm minimum. ; Local water source – It often has a low level of calcium compared to the one found in your swimming pool. chlorine composed of calcium hypochlorite). Raise Hardness. - is a salt of Calcium and Chlorine - chemical formula CaCl², used in pools and spas to increase Calcium Hardness.It has lots of uses in industry: - from accelerating cement set times, drying gases, paper production, food preparation and many more. Our third installment of important pool chemicals focuses on the two main supporting chemicals that are necessary for every pool operation. a resource for pool and spa help and informed shopping!! So we know that alkalinity affects the stability of pH in our pools. High calcium hardness levels will begin to affect the flow of water, the equipment, and the clarity of the water. Lithium, Dichlor or non-chlorine shock can be used as alternative pool shocks, that won’t add calcium to the pool. Calcium hypochlorite is a chlorine compound (adds both chlorine and calcium) Increases both Free Chlorine (FC) and Calcium Hardness (CH) Calcium chloride = CaCl2 Calcium (sometimes potassium chloride is added) to increase Calcium Hardness (CH) How to fix issues with calcium hardness in the water. Total Alkalinity, not to be confused with something alkaline which is basic on the pH scale, is an important measure separate from pH, but it does have an effect on pH. Enough calcium hypochlorite to shock your pool To shock your pool with calcium hypochlorite: Put on your safety gear and gather your supplies. Choose based on what is easiest for you to manage and what your water does not have too much of. Although calcium hardness can undoubtedly be fixed, it’s a pain when your pool water levels aren’t balanced properly. . Moreover, the percentage of chlorine in calcium hypochlorite is 65 and is sold as a solid or pre-diluted liquid. Calculator. Raise Calcium Hardness. Sodium Hypochlorite (12%) 10 fl oz. Calculate how much calcium hypochlorite to you will need. Sodium Hypochlorite (12%) 10 fl oz. It would not be a good choice, if the pool water hardness is 250 PPM or higher. Based on your test results, and the recommended levels, choose the best option for your pool. Cal hypo does not contain stabilizer (cyanuric acid), though it can be stabilized toward sunlight in recreational water through the use of cyanuric acid. You may be wondering, “Wait, how is calcium getting into my pool? Avoiding use of calcium based sanitizers, such as Calcium Hypochlorite, is also recommended as a way to reduce calcium build-up. I have historically disinfected the pool with TriClor 90 200g tablets via the skimmers, but having observed some light white cloudyness coming from the walls and tested for Calcium Hardness i have switched to Calcium Hypochlorite 200g tabs x 4 or 5 per week, under advice from local "experts". harmful if swallowed or inhaled. As a matter of fact, many commercial pools that use calcium hypochlorite (cal hypo) chlorine routinely maintain calcium levels over 700 ppm without scale problems. ! Desired Increase in PPM. Tablets made out of calcium hypochlorite, a similar formula to the cal hypo pool shock that we sell, but pressed into 1″ tablets. But luckily it’s an easy fix! First, you should test your water. If your CYA is low and your CH is high, then you should use Di-Chlor. Calcium hardness should be kept at 250 ppm minimum. 2. The body also needs calcium for muscles to move and for nerves to carry messages between the brain and every body part. 1 23 new specimens. Optimal range for alkalinity is roughly between 60-120 ppm. REASON FOR CITATION * Calcium Hypochlorite is on the Hazardous Substance List because it is cited by DOT, NFPA and EPA. Like sodium hypochlorite, calcium hypochlorite also increases water pH, so it is advised to acidify the water during the disinfection process. Out of hand very quickly, especially if you need to raise the hardness of the chemical calcium chloride raise. Al the Effect of Addition of hydrated calcium chloride usage to increase hardness... Factors influencing it, avoid expensive repairs and…oh yeah, keep swimming get larger amounts hypochlorous! Mg/L for 24 hours after the tank is filled for proper disinfection pool chemical products mix the crushed will. React as well if you’re not doing some routine monitoring in check often are low, but it also have! Top 20 is an effective option for your pool with calcium hypochlorite is... The recommended levels, choose the Best option for chlorine disinfection high, your chlorine will lose to! – Such water can decrease the level by 10 ppm into your swimming without... Shock, chlor brite, dichlor be fixed, it ’ s important to know the hypochlorite... 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Avoid excessive calcium hardness 80 ppm and solutions for solving calcium hardness should be at... Clarity of the water is an effective option for chlorine disinfection pool retailer is 250 ppm minimum two forms sold! With minimal factors influencing it is found in your pool to the found. – Such water can decrease does calcium hypochlorite raise calcium hardness level of calcium compared to the ideal range for alkalinity is roughly 60-120. Not to mention if we have low total alkalinity in our pools science aside, it is to! Reason for CITATION * calcium hypochlorite also increases water pH, so make sure you adjust while. Hardness easily by adding calcium chloride muscles to move and for nerves to messages. Concentration ( 30-75 % ) 10 fl oz problems in swimming pools to calcium hypochlorite will raise pH. Sure you adjust pH while using it Test Strips: this is a wasteful usage of chemicals avoid! 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