How to Use a Pool Chlorine Floater to Avoid Pool Stains

The floater is often underestimated in the pool, but it belongs in every professional pool maintenance set. But how exactly does the floater work, and what chemicals can be used in it?

A floater is a small aid for dosing disinfectants in the pool. There are several openings on the floater through which small amounts of flocculant or chlorine can be released into the pool water.

In this article, you will find interesting facts and detailed instructions on how to use a metering floater in a swimming pool.

Which pool chemicals can be used in the floater?

Before we jump to the instructions on how to handle a floater, you should know which chemicals can be used in it.

  • Chlorine tablets: The use of chlorine in the floater works best in the form of tablets.
  • Chlorine granulate: The use of chlorine granulate is allowed in the floater but should be replaced with tablets if possible.
  • Pool flocculants: The flock pillow and the flock tablet are two additional chemicals used in the pool floater.

You see: The pool chemistry used in the floater refers exclusively to solid agents – liquid chemicals are unsuitable.

You can find a suitable floater from Intex or Bestway.

The amount of chemicals used depends on the chemical condition of your swimming pool and can be dosed differently in a floater as required.

At this point, I have to mention that precise dosing with a floater in the pool is not really possible.

That is why it is important to monitor the parameters in your swimming pool on an ongoing basis.

The best way to do this is to use an electronic water tester.

Tip: It is also possible to measure pool water with test strips, but measurement errors are always expected. Electronic testers minimize incorrect measurement results.

How to use chlorine tablets in the floater?

A floater in the pool is ideal for continuously generating free chlorine.

This is the chlorine that actually helps disinfect the pool water.

Here I explain how to dissolve chlorine tablets in your pool using a floater.

  • If chlorine tablets are placed in the floater, they should be broken into small pieces if necessary.
  • Then place the tablet in the floater using rubber gloves. In addition, it makes sense to follow the manufacturer’s instructions when using a floater.
  • Then the metering floater is placed in the return flow of the filter system with a rope.
  • While doing this, watch the swimmer and see if any chlorine is released into the water. Ensure that the floater is not clogged and that the pool chemicals find their way into the pool.
  • Test the pool water until a chlorine level of 0.6 to 1.5 ppm is reached. If necessary, the amount of chlorine tablets in the swimmer is increased or decreased.
  • If too much chlorine is released into the pool water, it creates an acrid smell and stings your eyes. In this case, 1-2 tablets are removed from the floater.

Tip: I recommend using chlorine tablets that are as small as possible.

By using a floater, the general chlorine consumption in the pool can be reduced by up to 20%.

Considering how much chlorine is used in the pool each season, that’s a lot.

In my blog article, you can read more about using chlorine tablets in the pool. Just follow the link.

Info: A floater is problematic in a PVC or vinyl pool, as pool stains can occur. In this case, using chlorine tablets via the skimmer is the better choice.

How to use a pool flocculant in the floater?

The flocculant should not be dissolved directly in the water. Otherwise, the flakes will collect on the bottom.

This is why it is best to use the skimmer or a floater in your pool.

I explain how to do this in the following guide:

  • First of all, a flock pillow or a flock tablet is placed in the floater. It is best to follow the manufacturer’s instructions for the dosage.
  • Then, ideally, hang the floater on a rope in the return flow of the filter system. This leads to an even distribution in the pool.
  • After that, the water in the pool should flow for 30 minutes to allow the chemical to be circulated. Note, however: An extended filter run time is necessary on hot days.
  • Depending on the water content, the flock pillows or flock tablets must be changed every 10 to 14 days.

Avoid using the flocculant along with the chlorine in the floater.

For large swimming pools, two floaters are recommended in the pool.

I recommend my detailed blog article if you are looking for more information about the pool flocculant. Just click on the link.

Tip: Instructions for dosing swimmers are often difficult to understand. Therefore, if you have any questions, you should contact the manufacturer directly.

FAQ about pool floater

In this part of the post, you will find other interesting tips about the floater.

If your question is not there, you will find a hint at the end of the blog article on how you can contact me.

Do you leave the chlorine floater in the pool overnight?

I get asked a lot about whether the chlorine floater has to be removed overnight or when swimming?

No, the floater always stays in the pool water.

You only remove the floater if you have to refill it with chlorine or the flocculant.

Of course, you can put the swimmer out briefly while swimming.

If that bothers you, you can consider installing a chlorine metering sluice.

Is a floater with a thermometer recommended?

Some advisors claim that when using a floater – in combination with chlorine – the water should only have a maximum of 68 °F (20 °C).

Otherwise, the effect of chlorine can be up to 40% weaker.

I couldn’t share this experience.

Sure, some effect of chlorine is lost in warm water, but that is always the case due to the UV radiation.

As long as the filter run times of 6 to 8 hours/day are correct and the value for the total chlorine is in the ideal range of 0.6 to 1.5 ppm after a measurement, everything is fine.

Still, a floater with a thermometer can come in handy sometimes.

Is the floater or the skimmer a better choice?

That always depends on which pool chemicals you put in the skimmer.

It is best to place a chlorine tablet in a dosing floater and not in the skimmer.

If chlorine is used in the skimmer, bleach stains will appear. That is why the swimmer is the better choice – the same applies to the use of the pool flocculant.

Tip: You can find more information about the pool skimmer in the blog. Just click on the link.

Can you use a floater in the hot tub?

There is nothing wrong with using a floater in the hot tub.

However, you should remove the swimmer when using the spa to avoid direct contact with chlorine.

But pay attention to what material your hot tub is made of.

Chlorine applied through a metering floater can cause bleaching marks on PVC and vinyl materials.

Does the floater have disadvantages in the pool?

The metering float is not without its disadvantages.

On the one hand, you have to maintain the pool regularly, as an overdose of chemicals can always get back into the system and be deposited there.

The best way to do this is to backwash the sand filter system.

From my point of view, the floater still has an application flaw. Namely that the user cannot control the dosage of the chemicals.

This has a negative effect, for example, when opening the pool after winter since the correct initial parameters must be controlled.

Do you have any further questions about the pool floater?

Ask me your question at @contactswimfool directly on Twitter, Facebook, Pinterest, or on other social media – I’ll be happy to help.

Have fun using the floater.

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Hi. I'm Max Berg. I've been in the pool industry since 2015 and have always felt drawn to water. I'm the author behind swimfool.com, where I share my years of experience in pool maintenance and give helpful tips on keeping a swimming pool or hot tub clean. My tips reduce the costs of water treatment and protect the environment.

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