Water Chemistry /
Where to Put Chlorine Tablets in a Pool
Put chlorine tablets in the feeder your pool is designed for—like a floater, skimmer basket, or chlorinator—and never loose in the water.
Archive date: this article was written for PoolSkimmer on Oct 23, 2026 and given the earlier archive date of Mar 15, 2026 so the blog reads as an organized archive. It was not published on that date.
Proper placement for chlorine tablets in the pool
The rule is simple: use only the feeder your pool was built for, be it a floating dispenser, an inline or offline chlorinator, or a skimmer basket where the manual permits. Under no circumstances should one throw chlorine tablets straight into the water. A loose tablet left to rest on the bottom will do more harm than good, bleaching and staining the finish while resulting in uneven chlorination.
Finding the best spot
What works for one pool may not for another; it comes down to your equipment and what the tablet label dictates.
- Floating dispensers are a popular choice as they let the water keep the tablets in motion.
- *Chlorinators*, whether inline or offline, are engineered to break down tablets in a controlled fashion.
- The skimmer basket is fine provided the manufacturer deems it safe for your system.
Ultimately, the safest bet is whatever is sanctioned by both the tablet and your equipment manual. If your current setup is not amenable to tablets, opt for another form of chlorine rather than making do with an improvised solution.
Is the skimmer basket an option?
In some cases yes, in others no. Certain systems can take pucks in the skimmer, but you need to proceed with caution.
Before attempting this, shut the pump off; never put your hand near active suction. Then consult the skimmer and chlorinator manuals – if they do not give the green light for tablets, do not use them. Also check for any debris that might impede flow and cause the tablet to dissolve in patches. Wear gloves and eye protection as a matter of course when dealing with these chemicals. Should the skimmer be in disrepair or the pump acting up, or if you are in any doubt, put down the tablets and contact a pool pro.
Precautions before adding tablets
Run through a brief checklist:
1. Examine the label. Trichlor tablets, for instance, are meant for particular feeders. 2. Verify your equipment. Make sure you have a floater or chlorinator in place for the job. 3. See to the circulation. The pump and filter should be running per the manual so the tablets can do their work. 4. Put the water to the test. You want to maintain sanitation without over-chlorinating.
Stagnant water will hinder the dissolving process and leave the pool cloudy, so adequate circulation is key.
Pitfalls to steer clear of
It is easy to make a few common mistakes. Do not put tablets directly in the pool or leave them in contact with ladders, steps, metal, vinyl or plaster. Refrain from using a feeder the maker has not approved, or putting tablets in the skimmer if the manual forbids it. And always kill the power to the pump before you handle the skimmer. One size does not fit all when it comes to pools, so do not mix tablets with other chemicals.
Time to call in an expert?
There is no harm in getting professional assistance if you are dealing with a cracked or erratic chlorinator, persistent cloudiness, or stubbornly high or low chlorine levels. The same goes for suspected pump or corrosion issues, or if you simply do not have an approved feeder. In the event of an electrical fault or water that is plainly unsafe, stay out of the pool. When in question, let the chemical label and your equipment manual be the final word.
Sources and further reading
- [Hayward: Weekly pool maintenance](https://www.hayward.com/maintenance/weekly-pool-maintenance)