Should you have a pond ionizer?

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Would you like to use fewer Pond chemicals and stop algae in its tracks?

Enter the pond ionizer. 

 Koi pond ionizers are supplemental disinfecting systems that fight off bacteria and algae using copper ions. Before you decide to get one, you might have a few questions, like:


How do pond ionizers work?

How much do pond ionizers cost?

What are the pros and cons of pond ionizers?


As pond and water feature builders who love to educate our readers on pond maintenance, we’ll answer these questions to help you decide if a pond ionizer system is right for you. 

What is a pond ionizer?

A pond ionizer uses copper ions to eliminate algae in the water. 


Most pond ionizers are designed with a Microprocessor that Sends a Signal to an Ion Producing Probe Helping to Control Algae Throughout Your Entire Water Feature.  The Probe Releases a Calculated Mixture of Copper, Silver, and Zinc Ions into the Path of Flowing Water.  The Automatic Control Panel Sends Signals That Slowly Dissolve the Replaceable Metal Probe.  This Unique Combination of Metal Ions Increases Water Quality, Clarity, and drastically reduces Time Consuming Maintenance


How much do pond ionizers cost?

An electric ionizer for a koi pond might cost you around $300 to $500 on average. The iongen probe may need to be replaced every few months to every few years and can cost between $70 to $150 


Note: If you purchase an electric pond ionizer, you may need to factor in the costs to have it professionally installed.

Do pond ionizers really work? 

In short, yes they do.  There is much evidence that pond ionizers effectively help eliminate string algae.  

How long do pond ionizers last?

Pond ionizers can last many years provided they are cared for properly and the probes are replaced regularly. Most copper probes, especially for the Aquascape iongen system can last between several months to several years but will need to be replaced when the probe wears out. 


Pro tip: To ensure your ionizer lasts as long as possible, make sure to check the parts regularly and clean off excess scale deposits on the copper probe from time to time.  

 Pond Ionizer Problems 

While pond ionizers come with many advantages, they also could potentially cause problems for you as a pond owner. Here are some of the biggest issues that you might face if you choose a pond ionizer over algaecide chemicals.

Diatom rock coating 

The most common problem that pond owners have with ionizers is a film or coating may begin to develop on the surface of the gravel.  The rocks or gravel in your pond can develop a diatom film if the ionizer is configured improperly and releases too many ions for your pond's volume. 

This can typically be fixed by adjusting the configuration of your ionizer so it is releasing lower levels of copper ions into your pond better suited for its size 

Is a pond ionizer system right for your koi pond?

A pond ionizer without a doubt will help you prevent string algae in your pond, but it may not be ideal for those who want to avoid pool stains or don’t have the time to attend to stains before they become difficult to remove.  

Having an ionizer could add to the number of pond tasks that you need to be mindful of, including cleaning or replacing the copper probe.  However, if you’re seeking a way to reduce your use of algaecides and pond chemicals an ionizer might be an excellent option for your koi pond.