They contain 99% trichlor, which is the strongest concentration available in pool products.Īnd they come in extra large quantities in resealable containers for convenience. ![]() These particular tablets ( click here to check the price on Amazon) are 3 inches and come in individually wrapped packages, making them easy and safe to handle and dispense. Best chlorine tablets CLOROX Pool&Spa Active 99Ĭlorox is a trusted name in sanitizers so you can be sure their pool products well exceed expected standards. Some people prefer the larger tablets because they’re a little easier to handle, especially if you will be adding them directly to the skimmer.īut some prefer the smaller ones for automatic dispensers because you can fit more in them. They come in one or three inch tablets and it doesn’t matter which size you choose as long as you read the instructions and administer the right amounts. While there may not be a whole lot of difference in the chemicals they contain, some are just made with better methods and won’t crumble during shipping. If you decide to go with chlorine tablets as your choice of sanitizing methods, be sure to read the reviews of the product you choose. They also don’t pose the same spill risk as liquid, making them easier and safer to store. Liquid chlorine can be somewhat dangerous to handle if you’re not careful, causing skin burns or irritation.īut tablets are pretty safe to handle and in fact, are usually individually wrapped so they don’t have to touch your skin. There is also the factor of safer handling. So if you have a 20,000 gallon pool, two tablets will do the trick. One 3-inch tablet will sanitize about 5,000 gallons of water. Instead of having to measure anything out, you just need to know your pool size and drop the tablets in. Most of the time, pool-owners who use tablets instead of liquid or granular chlorine are simply doing it for the convenience. Most chlorine tablets you can buy are trichlor tablets, which are effective for most all water types. That is except for trichlor and dichlor, which are are concentrations of chlorine that contain cyanuric acid (CYA).ĬYA is what’s known as a conditioner or pool stabilizer because it protects the chlorine molecules from being destroyed too quickly by the sun. What most of these have in common is that they’re considered unstable, which means they don’t have anything to protect them from being quickly gobbled up by the sun’s UV rays. ![]() It is also very effective, containing about 65% chlorine. This usually has to be used with additional sanitizer, however, to be effective at killing algae or other bacteria.Ĭalcium hypochlorite, or cal-hypo, is the most commonly used chlorine for pools because it is safe and easy to use. >Read: How to remove calcium from your pool Most of the time, that’s probably okay, but in some instances, one is better than another.įor example, if you happen to have hard water where you live (or water with high calcium hardness), sodium hypochlorite works best because it contains only about 10-12% chlorine. The different types of chlorine are: lithium hypochlorite, trichlor, dichlor, sodium hypochlorite, and calcium hypochlorite.Īnd each of them serves its own purpose, although most people just pick up whatever is available at the local pool store and call it good. So, for chlorine to do its job well, all levels including pH, alkalinity, cyanuric acid, calcium hardness and chlorine need to be within normal ranges, which are:įirst of all, let’s explore some of the science-y basics of chlorine. The process is called oxidation, which is why some pool owners add more oxidizer to the water when using chemicals that don’t do the job well.Ĭhlorine only does its job, however, if all the other pool chemistry levels are balanced.įor example, if the pH level is too high, it will block some of the HOCI, leaving the pool less than optimally oxidized. ![]() It breaks down into several different chemicals like hypochlorous acid (HOCI) that kills those unwanted pests by destructuring the cells that create them. There are other sanitizers that get the job done, but none do it as well as good ol’ inexpensive chlorine.Ĭhlorine is proven to be the best chemical for killing bacteria, viruses and algae, and that, my friend, is everything you want dead in your pool!Ĭhlorine works because of a chemical reaction that takes place once it comes in contact with microorganisms and bacteria. Or, if this is your first time buying sanitizer for your new pool, maybe you’re wondering where to start.Įither way, let’s take a closer look at how you can choose the best chlorine tablets and then you can be the judge! How does chlorine work?įirst of all, you have to know the importance of using chlorine. If you’ve been using granular or liquid chlorine for your pool, you might be wondering if you should make the switch to tablets.
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