Taking care of a swimming pool isn’t always an easy endeavor. Not only do you have to physically remove the leaf and other debris from your pool, but you also have to maintain the proper composition of chemicals in it. This means maintaining the perfect blend of algaecide, sanitizer products and of course, chlorine pool tablets. If this balance isn’t properly maintained, then it can open the door for all kinds of bacteria and other nasty critters to move in.

Since we know just how important buying and using the best chlorine tablets are for the safety and health of your pool, we decided to do some research and find the ten best models available. Tablets that do their job well and are easy to use, too. The following ten products are the ones that we’ve discovered and the ones that we can recommend for just about anyone’s pool.

Best Chlorine Tablets

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10In The Swim 3-Inch Wrapped Tablets


These 3-inch wrapped chlorine tablets are concentrated and are made with 99% Trichloro-S-Triazinetrione, and this allows them to deliver a solid 90% available chlorine in each dose. These slow-dissolving tablets each weigh 8-ounces, and each 10-pound bucket contains 21 to 22 tablets. This is a good amount of tablets that will get most users through a good part of the swimming season. Since each of these tablets are slow-dissolving, they destroy bacteria over the course of a week, and the chlorine they release is UV stable, so the sun’s rays break it down slowly. This is why these are the best chlorine tablets currently available for any swimming pool.

9Rx Clear 1-Inch Stabilized Tablets


These 1-inch stabilized chlorine tablets are designed to keep your pool in the best shape possible. When used as part of a pool cleaning regimen, these tablets are able to help maintain the proper chlorine levels, and also reduce the growth of bacteria or algae. Each tablet contains 99% Trichlor, so they deliver up to 90% of available chlorine during each application. Each of these tablets only weighs a half ounce, and seven tablets are used for every 2,500 gallons of water per week. These tablets are used by adding them to the pool’s skimmer, and each one of them is individually wrapped for safe handling.

8Star Plus 3-Inch Swimming Pool & Spa Tablets


These 3-inch swimming pool tablets are made with 99% Trichloro-S-Triazinetrione, so they can easily control bacteria and algae in anyone’s pool or spa. They are made to be slow-dissolving tablets that release chlorine over a 24-hour period so that the pool is as clean and smooth as possible. Since it brings chlorine levels up to 90% available chlorine, it works quite well, and the product never needs to be filtered. These tablets can easily be used in floaters, skimmer or automatic chlorinators with equal success. And since they packaged in a 50-pound bucket, there’s always enough tablets for the swimming season.

7Robelle 5-In-1 Multi-Purpose Tabs


These high-quality 3-inch chlorine tabs are designed to keep the homeowners pool cleaner longer by working on 5 different key areas of the pool. These tabs can sanitize, clarify, destroy algae, descale and inhibit stains, so the homeowner’s pool can be crystal clean every time they swim in it. By having all of these elements in one tablet, pool owners can use this product and reduce the use of some of the other products they may be using in their pool. These chlorine tabs are designed to be a part of a weekly cleaning regimen, and 1 to 3 tablets can be used to treat pools up to 10,000 gallons.

6Nava Large Chlorinating 3-Inch Tablets


It doesn’t matter how they’re used these chlorinating tablets are sure to kill bacteria and algae in just about any size pool. These large 3-inch tables are slowly dissolved and UV stabilized, so they keep working long after lower quality tablets have stopped working. They can be deployed in skimmer baskets, floaters or feeders, and are individually wrapped so they’re safe to handle. They come in a large 25-pound bucket that ensures that the pool owner has exactly the right amount of tablets for their swimming season. And if that isn’t large enough, they can also be bought in 35 or 50-pound buckets, too.

5Doheny’s Swimming Pool 3-Inch Tablets


Made using a 99% Trichloro-S-Triazinetrione solution that delivers 90% available stabilized chlorine in each application, these pool tablets are ready to deal with even the toughest of pool cleaning jobs. When properly applied and used as part of a regular pool maintenance routine, these tablets are easily able to stop the growth of bacteria and algae in pool water. This enables the pool to remain crystal clear and safe to use by swimmers. These powerful tablets are individually wrapped for easy storage and handling, and come in an easy open bucket that can easily be stored in a pool shed or garage during the off-season.

4Clorox Pool & Spa Xtra Blue Tablets


Available in a variety of different sized buckets, these chlorine tablets are perfect for just about any sized pool. These 3-inch tablets have an advantage that other tablets simply don’t have. They are made with a 6-in-1 formula that kills bacteria and algae, removes organic contaminants for clearer water, and prevents scale and/or corrosion. The tablets are also able to make the water silky smooth and have a special formula that makes them resistant to being broken down by the sun’s UV rays. This allows these quality pool tablets to work longer and harder than their competitors, and this leads to a cleaner pool.

3Pool Mate 3-Inch Jumbo Tablets


These 3-inch tablets come in a variety of different sized containers that make them convenient for pools of all sizes. These tablets can be purchased in 4, 7, 15, 25 or 50-pound containers, so the pool owner also has the right amount of tablets for their size pool. Each of these tablets is individually wrapped, which makes them not only easier to store but also easier to handle. By using 1 to 3 of these tablets in their pool, homeowners can treat up to 10,000 gallons of water at a time. These tablets will quickly help restore balance to any properly maintained pool and are UV stabilized so they last longer against the sun’s harmful rays.

2HTH Pool Sanitizer 1-Inch Tablets


These 1-inch tablets are useful for a variety of different swimming pool applications. They can be used in regular or saltwater pools, and each tablet is capable of treating up to 10,000 gallons of water for precisely one week. These tablets can easily be used in floaters, skimmer or feeders, and the chlorine in this formulation is sun protected, so it has more effective pool sanitizing properties. And speaking of pool sanitizing, this product is able to quickly kill algae and bacteria, so people and pets can swim in the pool with confidence. All of these qualities make these tablets an important part of any pool care regimen.

1Clorox Pool & Spa Active 99 3-Inch Tablets


Clorox is known the world over for creating household cleaning products made with bleach, so it’s shouldn’t be too much of a surprise that the company is also making some of the highest quality 3-inch chlorine tablets currently available for use in your pool. These tablets are designed to be used in either a feeder, a skimmer or a floater, and each one can treat up to 10,000 gallons of pool water to bring it up to the necessary 4 parts of chlorine per million required to keep your pool’s water healthy. Each tablet kills harmful algae and bacteria and is also individually wrapped for convenience.

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A Guide To Chlorine Tablets

When you own a pool, you want to make sure that it’s as clean as possible. That’s a given. And one of the ways that a person can keep their swimming pool clean is by using chlorine tablets. These tablets do a wonderful job of killing viruses and bacteria that might have been lurking in the water otherwise. Most of the time it does this job extremely well, which is why it’s so often used for sanitizing pools. However, if the pool owner applies the product incorrectly, using too little or too much, they can have some significant problems.

Using too much chlorine can leave everyone’s eyes and skin red and irritated, and using too little chlorine can allow unwanted lifeforms to take hold in the pool. None of these are things that pool owners want to deal with, so we decided to write this guide to use chlorine tablets. In this guide, we’ll talk about how to figure out how many chlorine tablets should be used in a pool and how to add chlorine to a pool. We’re doing this because ultimately it doesn’t matter if your purchase the best chlorine tablets in the world, they’re not going to do the job that you want them to do if you use them incorrectly.

Choosing The Right Size Chlorine Tablets

Chlorine tablets come in two basic sizes: 1-inch tablets and 3-inch tablets. The size tablet that you’re going to need depends on the size of your pool. It can take up to twelve 1-inch tablets to disinfect 5,000 gallons of pool water, but it only takes one 3-inch chlorine tablet to treat the same amount of pool water. Therefore, in most cases, 3-inch tablets are what most pool owners are going to want to choose for their pool.

Calculating How Many Chlorine Tablets Your Pool Needs

To achieve the right chlorine concentration, you’re first going to need to figure out the dimensions of your pool. And in order to do measurements of your pool correctly, you are going to need to take your pool’s shape into consideration in order to know how you measure it to get volume. Let’s take a look at some of the most popular pool shapes and the formula for figuring out their volume.

Square and Rectangular Pools

For square and rectangular pools, you measure the length, width, and depth of the pool. You’ll then use the formula Length times Width times Average Depth times 7.5. While most people understand why length, width, and depth are multiplied together, some people are wondering right now why it’s all multiplied by 7.5. And the reason why we factor in this number is that 7.5 is the gallons of water in a cubic foot, so the formula will yield the number of gallons in the pool. For example, a 20×20 pool that’s 6-feet deep contains 18,000 gallons of water (20x20x6x7.5).

Circular Pools

Figuring out the amount of water in circular pools is a little bit different. The formula is 3.14 times the pool’s radius times the average depth x 7.5. Once again, the 7.5 is the number of gallons contained within a cubic foot of water. This formula can be pretty tricky considering that you have to square the radius of the pool—which means it’s multiplied with itself.

Therefore, if you have a pool that’s 24-feet in diameter, you’re first going to have to convert it to the radius. As we should all know from school, you do that by dividing it by two. That gives a 24-foot diameter pool a radius of 12-feet. And now let’s say that the average depth of this fictional pool is 4.5-feet deep. Okay, now we can plug those two numbers into our equation and find out how many gallons of water the pool contains. So, 3.14x12x4.5×7.5=1,271.7 gallons.

Irregularly Shaped Pools

Irregularly shaped pools can present the pool owner with a lot of frustration when it comes to trying to figure out the volume. Fortunately, that doesn’t have to be the case. The volume of an irregularly shaped pool can be obtained by breaking the pool into smaller square or rectangular areas and measuring the volume of each. When that’s done, all of the volumes can then be added together to come up with a total pool volume.

Methods Of Adding Chlorine To A Pool

Now that we understand the volume of our pools, and as a result, we know how much chlorine we need to add to them, it’s time to turn our attention to how to add those chlorine tablets. The one thing that a person isn’t going to want to do is to grab a handful of chlorine tablets and toss them into the pool. No, that would be the absolutely wrong thing to do. Remember, you can’t use chlorine tablets like granular chlorine. Instead, you’ll want to use one of the three different methods of adding chlorine tablets to a pool: Floating Chlorine Dispenser, Pool Skimmer, and the Automatic Chlorinator. Let’s look closely at each of the methods before this guide ends.

Floating Chlorine Dispenser

These dispensers are made out of plastic and simply float around the pool delivering the chlorine from the chlorine tablets that are contained within them. When using these dispensers, be careful they don’t get hung up and over dispense in one area. Dispensers aren’t usually a good idea for pools with liners either.

Pool Skimmer

The best method of adding chlorine tablets to a pool is through the skimmer. This is a great method, but the tablets can continue to dissolve when the filter isn’t running and this can create highly chlorinated water that could potentially damage equipment if not promptly dealt with.

Automatic Chlorinator

The last method of adding chlorine tablets to a pool is through an automatic chlorinator. These devices give the pool owner a great deal of control over their chlorination. All that has to be done is to add tablets, set it for chlorine levels from 1 part-per-million to 3 parts-per-million, and then let it go. As is the case with any method of adding chlorine, just be sure to regularly test the water to make sure chlorine levels are right.