About Ozone

OZONE: Is a gas also known as O3, ozones' molecule consists of three oxygen atoms, with a delta negative and a delta positive electric charge. Because the ozone molecule is unstable, it has a relatively short life, therefore ozone gas will decay after a short time turning back into its original form of oxygen (ozones' only by-product apart from the bacteria it has destroyed). 

Ozone Molecule

Ozone is safe for humans in the quantities that are used in spas as it decomposes relatively quickly to re-form as oxygen and can be an effective bactericide. In spas, ozone is produced by one of the two methods listed below:

Ultraviolet Ozone: UV Ozone is the most common way of producing ozone gas, this is created the same way ozone is created naturally in the atmosphere, by passing oxygen through ultraviolet light.

Corona Discharge Ozone: CD Ozone is produced when an electrical discharge passes through oxygen. In nature, lightning strikes can produce a large amount of ozone gas.

Mixing Chambers: Are probably the best way to ensure that there is no residual ozone gas trapped between the water level and hard cover on your spa. Because ozone naturally converts back into oxygen after being in submersed in water for a short time, a Mixing Chamber ensures that the ozone gas is submersed underwater for longer than required, therefore ensuring that there is very little or no residue remaining which can cause damage to the spa.

Gas Off Chambers: Are generally fitted to CD Ozone units as these potentially produce too much O3 gas. The purpose of the Gas Off Chamber is to remove excess ozone gas before it can damage the spa. By utilising a charcoal filter, the Gas Off Chamber eliminates the potential of harmful gas damaging fittings, head rests, cover etc. This type of system is very good but it is quite expensive.

Should I use Ozone in my spa? If you listen to the majority of sales people, you would think ozone is some type of miracle fix-it for spa water sanitation and something that's definetely required on a spa. The reality of it is that most types of ozone units on spas are of a very low quality and will not make much (if any) of a difference to the quality of water in your spa. It's our experience that ozone tends to do more harm than good if not done properly and can get very expensive when replacing the unit.

Note: If you have been sold on the idea of ozone, ask the sales person to show you the spas' ozone unit and plumbing lines. If you think the O3 bubbles are not going to be submersed in water for long enough, get the company to guarantee IN WRITING that there will not be any issues with ozone gas and that you are covered if there are problems later on...