I have been putting chlorine tablets (also known as chlorine pucks due to their size and shape) directly in my skimmer baskets for most of the past 7 years that I have owned my pool without any problems. I usually do this immediately after I have cleaned the pool.
It is perfectly acceptable to put chlorine tablets in your skimmer basket. In fact, it is the normal place to put them as the water runs through the basket on its way to the pump so this helps them to dissolve.
When I think about it, when swimming pools have been around for so long, it is surprising that they aren’t built with a specific chlorine/chemical feeder system. They are available but don’t seem to be fitted as standard.
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Chlorine tablets in skimmer
One of the advantages to putting the chlorine tablets in the skimmer is that when the pump is running the water flows over them so it becomes chlorinated as some of the tablet dissolves. It is then pumped back into the pool and is distributed evenly throughout the pool.
So “they” say, putting the tablets in the skimmer basket can lead to the eventual corrosion of the skimmer basket and perhaps the skimmer itself. However my pool is now almost 20 years old and the previous owner put the tablets in the skimmer and so have I but there have been no ill effects yet.
It is true that when the pool pump isn’t running that the tablets will continue to dissolve in the skimmer basket so this water will become quite concentrated with chlorine. As long as your pump runs every day that isn’t such a problem. As soon as the pump starts the “concentrated” water passes through the system in seconds so doesn’t have a chance to do any damage anyway.
I actually use 5-in-1 3″ tablets which include sanitizer, clarifier, stain inhibitor, descaler, and algaecide all in one tablet so are very convenient to use. I use these – 5-in-1 Multi-Purpose 3″ Chlorinating Tablets
What other methods can I use to add chlorine tablets?
Floating chlorine tablet dispenser
The main alternative to putting chlorine tablets in the skimmer basket is to use a floating chlorine dispenser. These allow you to put tablets in them and they float around on top of your pool slowly allowing the tablet to dissolve as they go. They normally have a method of restricting the amount of water which can enter the dispenser to slow or speed up how quickly the chlorine tablets dissolve.
For some reason (to paraphrase Henry Ford) they come in every color you want, as long as it is blue. That is apart from some of the novelty versions which may have a duck, a dolphin or even an alligator on top.
I have this one which has a high capacity and I tend to use it when I don’t have the pool cover on (yes, it’s blue) – Large Capacity Floating Chlorine Dispenser
I use a smaller version of the one above to add chlorine to my hot tub as there is no skimmer basket to use as an alternative.
My favorite novelty floating chlorine dispenser is an alligator head (or is it a crocodile) although
Poolmaster do a version with a Mallard duck on top that is quite realistic too. Check out their full range of novelty chlorine tablet dispensers that are available here on Amazon Poolmaster Chlori-Critter Chlorine Dispenser for Swimming Pools and Spas.
I used floating dispensers before I bought a solar pool cover but with the pool cover in place they get stuck along the side by the cover.
Inline chemical feeder
These are placed in the pipework that goes from the filter to the pool. Chlorine tablets are placed in them and water passes over them to be delivered to the pool. They generally have a means to control the feed rate to select how quickly you want the chlorine tablets to be dissolved.
They are not very expensive and can be retro-fitted to your pool in most instances.
They are available on Amazon for less than $100 so might be worth considering. The Hayward CL200 In-line Automatic Chemical Feeder holds up to 9 tablets so would be ideal if you were going on vacation for a few weeks so the chlorine levels would be kept up while you were away.
How long does it take for a chlorine tablet to dissolve?
When I add chlorine tablets to my skimmer basket, with the pool pump running for between 5-8 hours per day, they normally take around 3 days to dissolve completely.
I have found that in a floating chlorine dispenser they normally take a little longer than that.
Can you put chlorine tablets directly in pool?
You should never just throw chlorine tablets into your pool, no matter how tempting it may be to do that. If you do then they will sit on the bottom and the chlorine will bleach the color out of the liner under and around the tablet. You you will end up with a pale, or even a white, patch at the bottom of the pool which will make it look awful.
Also, since when the chlorine tablets are sitting on the bottom very little water movement will pass over the tablet so it will take an age to fully dissolve and will not get dispersed around the pool, which is what you are trying to achieve.
How many chlorine tablets should you use?
This depends on the chlorine levels that exist when you do a water test. When the pool chemistry is correct, I generally put 3 or 4 of the larger 3 inch tablets in my skimmer every week for my pool which holds approximately 15,000 US gallons of water.
How to use chlorine tablets in above ground pool
Your options are pretty much the same if you have an above ground pool, as with an in ground pool. That is unless you have a very cheap pool without a skimmer. So put the chlorine tablets in the skimmer or a floating chlorine dispenser, as described above.
Can you swim with chlorine tablets in pool?
Provided your pool chemistry is correct then you can swim while the chlorine tablets are in the skimmer or a floating dispenser without any problems. If you have an inline chlorine dispenser you would have no choice anyway as the tablets would always be there.
What alternatives are there to chlorine tablets?
Chlorine tablets are easily the most straightforward way to add chlorine to your pool. However, instead of using tablets you can use powdered or granulated chlorine. You should never just pour this into the pool or the skimmer though.
Get a large bucket and fill it with pool water, then start adding the granulated chlorine while stirring with a stick or some other implement. Keep stirring until it is dissolved. Then walk around the pool pouring the water back into the pool as you walk so that it is evenly distributed.
My top three pool cleaning tools to make life easier
Dolphin Nautilus CC Plus Robotic Pool Cleaner – the best time saving product on the market. I have never heard anyone say they regret buying one.
Hayward Poolvac Leaf Canister – very useful when leaves are a problem in your pool
Aquatix Pto Pool Step & Corner Vacuum Head – I use this every time I vacuum my pool. It gets where other vacuum heads can’t.
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