Menu
Pool Maintenance - Sutro Pool Maintenance Blog
  • Basic of Pool Chemicals
  • Pool Safety
  • Pool Monitoring System
  • Pool Volume Calculator
Pool Maintenance - Sutro Pool Maintenance Blog
  • Pool Maintenance Blog
  • >
  • What is a Pool Ionizer
What is a Pool Ionizer



What is a Pool Ionizer

Posted on January 7, 2022November 12, 2022 by Tre Golding

Pool ionizers are really neat! This will take you back to chemistry class, so get ready. So you remember what an ion is right? Well if not that’s ok, we will break it down here. 

An ion is basically an atom that carries a charge. In the case of swimming pools copper and silver ions are the weapon of choice to fight algae and some bacteria respectively. However, don’t fall into the trap of thinking that you only need an ionizer for clean water, that’s not the case. 

You always need a residual amount of chlorine or bromine to handle the pathogens that aren’t susceptible to an inozier. This is where Sutro, our pool monitor, can help you keep your water clean and clear by testing your pH and free chlorine or bromine 3x/day and your alkalinity once per day. 

By keeping an eye on your sanitizer level you can rest assured that your ionizer is getting the help that it needs. Let’s look at the types of ionizers and their use.

Pool Ionizer types

Before we talk about the types of ionizers it’s important to make a distinction between ionizers and mineral systems as people often get them confused. Ionizers actually use electricity to break copper and/or silver into ions and mineral systems bring their own ions. So let’s talk about ionizer systems that use electricity.

Ionizer systems can be built into your plumbing system or can be free floating. The type that’s plumbed into your pool circulation system uses electricity from your panel to break the ions and as the water passes through the ionizer it takes the charged ions into the pool where they can attach to the walls of microorganisms and make them vulnerable to your sanitizer. 

Remember, ions alone can’t effectively kill microorganisms, they need the help of a sanitizer like chlorine or bromine. 

Another way to deliver ions to your water is to use a solar pool ionizer. It works the same way as a built in ionizer but it uses solar power and it floats in your pool. Now right away you should be thinking about what happens when the sun is not out, and yes you got it. 

What is a Pool Ionizer
pool ionizer

If the sun is not out then there are no ions being generated and you may need more sanitizer during that period of time. So, you should consider how much sunlight your pool gets and think about which option is the best for your setup.

Pros and cons of ionizers

Well, you knew it was coming. Like anything, there are pros and cons to everything. Let’s take a look at some that could help you make your decision.

Pros

  • Now, here is the benefit of an ionizer, your water will require much less sanitizer which means it will not be as harsh on your skin. The typical recommended free chlorine level when using an ionizer system is between .5ppm – 1.0 ppm. 
  • People say that they can feel a difference in the water and that it is softer due to reduced chlorine concentration.
  • Over time, a long time, there will be reduced wear and tear on your equipment due to the lower chlorine levels.
  • If you let your chlorine drop then it’s okay as long as it doesn’t bottom out at 0.

Cons

  • People think that they need a sanitizer like chlorine or bromine and they end up with unsafe water.
  • Can cause staining if you let the ion concentration get high enough for a higher pH to cause precipitation of the ions (metal ions stain).
  • Con – It’s more expensive than using higher sanitizer levels.
Ionizers can help you keep your water safe, but you have to understand how to use them and you also have to monitor your chemistry. Monitoring chemistry is where Sutro pool chemical monitor can help you by testing your pH and free chlorine 3x/day and alkalinity 1x/day. We take care of the hard stuff so you can enjoy the fun stuff!

Image credit: Nerd Techy

  • pool ionizer
  • solar pool ionizer
  • How to’s – Pool maintenance guides

    Pool Volume Calculator

    Sutro vs. WaterGuru 

    Sutro vs. Keto

    How to shock your pool

    How to vacuum a pool, like a pro

    How to add Algaecide to your pool

    How many chlorine tablets to add to your pool?

    How to get rid of Algae in my pool?

    How to clear Cloudy Pool Water

    How to Open an Inground Pool for the Summer

    How to Raise or Lower pH and Alkalinity

    How to fix water imbalance

    How to lower/raise Alkalinity in Pools

    Pool Chemicals – Learn how to use pool chemicals

    Pool Brands for your Pool

    Chlorine Pool Tablets

    Algaecide for Swimming Pools

    Pool Stabilizer – What is it and how to use it

    Alkalinity Up – A way to increase alkalinity

    Pool Chemicals – All you need to know

    What is Flocculant and how to use it in the pool

    Metal Sequestrant – What is it?

    pH Up to raise the pH of your pool

    Pool Brands

    Bioguard Silkguard Complete

    Bioguard Silkguard Complete Sticks

    Clorox Disinfecting Bleach

    Clorox Germicidal Bleach

    Clorox Ph Down

    Clorox Shock Xtra Blue

    Hth Super Shock

    Hth Shock Treatment

    Klean Strip Muriatic Acid

    Leisure Time Renew

    Leslie’s Power Powder Plus

    Morton Pool Salt

    Pool Essentials Chlorinating Liquid

    Pool Essentials Shock

    Poolife Turbo Shock

    Spaguard Enhanced Shock

    Spaguard Chlorinating Concentrate

    Trevi Non Chlorine Shock

    Trevi Blue Clarifier

    Trevi Stab Plus

    Trevi pH Minus

    Trevi Alca Plus

    Recent Posts

    • The HASA Liquid Feeder and Sutro Package 
    • How to get rid of white water mold
    • How to read a pool test strip
    • Hot Tub Chemicals – All you need to know
    • How to vacuum a pool – Like a Pro 
    • How to shock your pool
    • All you need to know about algaecide for your pool
    • Chlorine tablets for pools – Becoming the chlorine master of your pool
    • How to get rid of algae in your pool – Every tip you should know
    • Know the Pool You Are Renting Is Safe – Swimply With Sutro

    Sutro Pool Maintenance Monitor

    Don’t know what chemicals to add or when? Sutro will tell you!

    Sutro will do this for you:

    🌡 Measure your pool (or spa) temperature

    🧪 Monitor pH, Alkalinity, etc.

    👨🏻‍🔬 Send you recommendations on treatment options

    No need to leave the comfort of your home (or sofa!).

    With Sutro, you get what you need, when you need it, from partners that you trust.

    > Click to learn to see how Sutro works

    Search

    Our Device

    • Sutro – Automatic Pool Maintenance Monitor
    • Sutro Reviews
    • About
    • Partners
    • Wholesale
    • Contact us

    Pool Maintenance Tips

    • How to get rid of Algae in your pool?
    • Pool Chemicals
    • How to Open an Inground Pool for the Summer
    • How to Raise or Lower pH and Alkalinity
    • Cloudy Pool Water? Solve it in 6 easy steps!
    • How to Have Amazing Pool or Spa Water
    • How to lower / raise Alkalinity in Pools

    Sutro Smart Water MOnitor

    Don't know what chemicals to add or when? Sutro will tell you!

    With Sutro you’ll save time, cost and effort while keeping your pool chemicals in balance, even if you don’t know what you are doing, the Sutro app will help you out telling you what to do.

    >> Learn More About Sutro

    ©2025 Pool Maintenance – Sutro Pool Maintenance Blog | Powered by WordPress & Superb Themes