Leading Supplier & Manufacturer of O3 Ozone Generators


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5 May 2010: Ozogen to release a new range of highly cost effective and super reliable ozone generators in May 2010, P102 to P105, 2g/h to 15g/h.

25 January 2010: Ozogen revise the housing design of all P range O3 Generators. The redesign is to include the latest changes in O3 technologies to again further improve the quality and reliability of this range of products. The whole design is around running in the worst conditions possible 24/7 for many years without internal part replacement.

2 April 2009: Ozogen provide the Sol Kerzner - One&Only Resort in Cape Town with O3 generators for various swimming pools and water features.

1 Dec 2008: Ozogen revise the P002 3g/h Ozone Generator to include water cooling of the detonator centre core when used on water sanitation projects.

14 April 2008: Ozogen initiate a process to electro-polish and pacify the stainless steel centre piece of the detonator, the direct results are higher performance and less maintenance, further improving all swimming pool and water sanitation  units.



Why choose Ozone above Chlorine?


This product is also easily used for sanitation of drinking water tanks.

Click Here for Diagram



Basic product range suitable for use on water sanitation projects:

P102 +-2g/h

P103 +-5g/h

P104 +-10g/h

P105 +-15g/h

Note: Unit required will vary pending temperature, bather load, filtration system, pump run time etc. For more complex installations, we can provide contactor tanks with off gas systems as well as monitoring and control equipment with air preparation.

Ozone for water sanitation is not only healthy but also environment friendly.

These units use the equivalent amount of electricity of a standard household light bulb and are extremely cost effective, not to mention the possible savings on chemicals and chlorine.

Success on swimming pools with ozone can be quite technical and requires an end to end combination of the correct selection of product that is properly installed. An incorrectly installed system will not work and we do not advise DIY installations. All DIY installations are done at own risk and any damage to equipment is not covered under warranty.

Download Detail PDF Docs Below:

Download Ozone Generator Brochure on Units Suitable for Swimming Pools

How to Prepare & Maintain your Pool before & after Installation

General Installation Diagram For Swimming Pools

Basic Maintenance Diagram For Units on Swimming Pools


Basic Unit Sizing

For ozone to be effective on a swimming pool, the minimum sizing recommendation is 1g/h per 10 000 litres of swimming pool water, this also caters for variation in the amount of ozone generated by these units due to variances in altitude and climate. The maximum ozone output of units drawing ambient air will vary according to humidity, altitude and airflow. Another important factor is pump run time and a minimum pump run of 12 hours is recommended, but more hours are better. When your pump stops and the ozone generator switches off, you have no sanitation on the pool. A decent pump run time is crucial to keeping your pool water sanitised and at the same time good for filtration to keep your water clear..††

(Litre Calculation: Meters (L) x Meters (W) x Meters (D) = cubic meters x 1000 = Total Litres

Factors Reducing Ozone Concentration

The ozone concentration in the water declines due to consumption by such "ozone demand" factors as microbes, minerals, and organics. It also has a time exponential decline due to its natural "half-life" (time for the concentration to fall in half). Half-life depends on ozone demand, temperature, pH and other factors. Assuming a neutral pH of about 7 and room temperature, typical ozone half-lives in water are:

1 - Clean, high quality water Over 10 minutes†

2 - Water with some chlorine or minor contaminants 1-10 minutes

3 - Moderately dirty water, water with strong chlorine or organics, etc. 10-60 seconds

4 - Waste water with significant reaction elements A few seconds††

Based on the information above, it is clear that not all similar sized swimming pools will require the same size ozone generator. It is key that bather loads, other water contaminants and the environment need to all be carefully considered when sizing an ozone generator to a specific pool.††

Ozone on Swimming Pools

Ozone is a highly oxidative product that is more powerful and quicker acting than any of its chemical comparatives such as chlorine or hydrogen peroxide and also known to kill bacteria types that the others cannot through normal safe levels of concentration. Ozone is especially effective in removing odours, precipitating iron and manganese, oxidizing organics as well as killing bacteria and sterilizing the water. It is safe to use and cost effective to operate. Ozone has been adopted by multiple municipal water sanitation plants world wide and is becoming more and more the sanitizer of choice for swimming pools especially since the ban placed on the use of chlorine in multiple countries. Unlike other sanitizers, especially chlorine that leaves a residue of trihalomethanes implicated as carcinogens in the development of kidney, bladder and colon cancer, Ozone reacts with organic materials to break them down into simpler compounds that are not dangerous. Ozone is also good at breaking down harmful residues created by other sanitizers. There is lots of evidence available to prove that the use of ozone on swimming pools is far superior to the use of any other sanitizer, not to mention the added health benefits.

How it Works

Ozone is an unstable compound generated by the exposure of oxygen molecules to a high energy electrical discharge. The weak bond holding ozoneís third oxygen atom is what causes the molecule to be unstable and thus, very effective. Oxidation reaction occurs upon any collision between an ozone molecule and a molecule of an oxidizable substance (i.e. bacteria, fungi (mould & yeast), viruses, forms of iron & manganeseÖ) The weak bond splits off leaving oxygen as a by-product. During an oxidation reaction, organic molecules are changed and dissolved metals are made no longer soluble.

The Technology

The Ozogen units are based on the following corona discharge principle as indicated in the diagram below. Ozone is generated by creating an electric field between two electrodes that is strong enough to rip apart molecules known as a corona or corona discharge.







Ozogen create a corona discharge inside a reactor constructed of high grade stainless steel combined with high purity ceramic components. This design is definitely one of the most robust and reliable commercially available. We then take this reactor and combine it with solid state electronics concealed in epoxy to prevent moisture contamination and fit this inside a specially designed housing with a cooling fan, protection fuse and neon light to show that high voltage is being applied to the reactor. Heat is an ozone killer so on our bigger units that generate more heat, we add water cooling on larger units to keep the core of the reactor cool and ensure high performance even in the hottest conditions. The corona discharge technology is chosen because it allows large amounts of ozone to be generated in a device that can last for many years unlike some of the other technologies.

Ozone Transfer into the Swimming Pool Water - (If this is not right, it will not work)

Air is sucked through the ozone generator using a venturi that is installed on the swimming pool return pipe from the pool filter to the pool. The basic venturi for installations where the pump and filter is located above water level can be easily fitted to 50mm PVC pool pipes by cutting out a small section of pipe and securing the venturi in place with PVC glue. For 40mm plastic pipes or other, simple reducers are used that are available at most swimming pool shops. Installation is generally simple and quick if the pool pump is equal to or above water level. The venturi used by Ozogen ensures adequate airflow through the pool units, to maximise ozone output as well as ensuring a good transfer of ozone into the water. Generally speaking when running off ambient air, you need close on 5x the airflow to achieve the same O3 output as opposed to running off high grade oxygen. It is very important that a venturi is sucking properly and hence they must be properly selected and installed.

If your pump and filter is below water level then the installation is more technical and will require a specially sized venturi be installed to overcome the head pressure and yet still provide suitable suction.

To improve the transfer of O3 to water a static mixer can be used. Below you can download a document that shows you how to make a simple but very effective static mixer for your swimming pool.

DIY Static Mixer PDF Doc

Cloudy Water in a Ozone Swimming Pool

Donít Worry... In This Case, Itís Temporary and Good!!!

Cloudy water can be caused when an ozone generator is first installed because the ozone oxidizes the organics in the water causing them to form a chain which then becomes visible to the eye and gives the water the cloudy appearance. Another way water can appear cloudy is with an imbalance in the water. Always check to make sure the pH, alkalinity and calcium hardness are balanced. Customers are concerned when, within a day or two of installing their ozone generator, their pool water becomes cloudy. The common reaction is to "shock" the water which clears the water for one or two days before it turns cloudy, and they need to "shock" it again. Shocking the body of water with large amounts of chlorine will break down the molecular chains formed by ozone, but is not recommended. Water will appear clear temporarily, but a few days later the shock is exhausted and the ozone cycle begins again, resulting in cloudy conditions. To avoid this cycle, the chains formed by the ozone must be allowed to grow large enough to be filtered.

Basic Swimming Pool Maintenance

For any sanitizer to be effective including ozone, basic pool maintenance must be followed. Below is a basic guide that can be downloaded to advise on pool maintenance and assist you in maintaining your swimming pool clean and sparkling.


Removal of algae on an O3 pool is typically done by throwing 1 x Chlorine tab (Poolbrite "Hi-Tech" tabs are recommended) per 10kl into the weir and running the pump for 48hours. The O3 super activates the Chlorine to rid the algae and then burns up the Chlorine. Next you need to throw in some ALUM (small quantities, 1 tablespoon per 10kl into weir, too much will make your pool milky and reduce pH) to clean up the algae residuals and phosphates. Give the pool a good brush and then vacuum on the following day to waste or backwash immediately after vacuuming. Avoid algaecides on an O3 pool as you loose effectiveness of the O3 whilst it is working against the algaecide, not to mention possible foaming, algaecide smell and other chemical reactions.

For general prevention of algae, 1 x 2L bottle of Poolbrite "Tru Blu" can be added to the pool every odd month.

Download General Swimming Pool Maintenance Guide