15W UV Clarifier

• 525Mm (L) X 88Mm (W) X 167Mm (H)
• 20.67″ x 3.46″ x 6.57″
• 220-240V – please note you will power this off your circulation pump on your Hot Tub / Plunge Pool (this must be 230V in the USA, NOT 110V)
• For Hot Tubs and Pools up to 15,000 Ltrs / 3200 Gallons
• Price includes delivery

Ultraviolet (UV) light is a type of electromagnetic radiation that lies in the spectrum between visible light and X-rays. UV light is divided into three main categories: UVA, UVB, and UVC. UVC is the most effective type of UV light for killing microorganisms, and is the type of UV light that is typically used in hot tubs.

When water flows through the hot tub’s plumbing system, it passes through a chamber that contains a UV lamp. The lamp emits UVC light, which sterilizes the water by damaging the DNA of any microorganisms present. This prevents the microorganisms from reproducing and keeps the water clean and safe for use.

The effectiveness of the UV sterilization process depends on several factors, including the intensity of the UV light, the flow rate of the water, and the length of time the water is exposed to the UV light.

In general, the higher the intensity of the UV light, the faster the flow rate of the water, and the longer the water is exposed to the UV light, the more effective the sterilization process will be.

In addition to killing microorganisms, UV sterilization can also help to reduce the amount of chemicals like chlorine or bromine that are needed to keep the water clean. This can help to make the hot tub water more comfortable to use and reduce the potential for irritation or allergic reactions.

It’s worth noting that UV sterilization should be used in conjunction with other sanitizing methods, such as chemical treatment, in order to maintain a safe and healthy hot tub environment.

UV – The Installation

The Installation of UV is pretty straight forward. The UVC units sit in series with your circulation plumbing and they should be after the heater or spa pack.

If you don’t have a circulation pump, then you should put a bypass on the UV unit to allow for adequate flow to your jets – most units have a maximum flow rate of around 80 GPM, which is not enough for your jets.

In terms of powering the unit, as they are low current draw, I like to power these directly off the circulation pump. That way, you are only ever running the unit when the water is circulating.

This may not be how the manufacturer has designed the system to work, but for me, it is an effective way of doing things.

The CUV is installed in the plant room after the filter and before the salt water chlorine generator or tablet feeder if used, on the return line to the pool. Every CUV is simple to install and is supplied with pre-fitted stainless steel mounting brackets that allow you to fix the unit horizontally or vertically. All units are supplied with 1 ½” male threaded unions.

Chemical Free Option?

UV on its own as we have established, is not an effective or I should say, Complete way of sanitising your Hot Tub. However, if you are looking to run a completely chemical free hot tub. Then here is an alternative for you. UV & Active Oxygen.

Active Oxygen Tablets

Active oxygen tablets for hot tubs are a type of sanitizing agent that are used to keep the water in a hot tub clean and safe for use. They typically contain hydrogen peroxide as an active ingredient, which acts as a powerful oxidizing agent that can kill bacteria, viruses, algae, and other microorganisms that can grow in the warm, humid environment of a hot tub.

The tablets are usually added to the hot tub on a regular basis, usually once or twice a week, depending on the usage and the number of people using the hot tub. The frequency of use, water temperature and bather load are also factors to consider when determining the appropriate dosage. The tablets are typically placed in a floating dispenser or directly into the hot tub’s skimmer.

It’s important to follow the manufacturer’s instructions for use and dosage to ensure that the water is properly sanitized. In addition to using active oxygen tablets, other measures such as maintaining a consistent pH level, keeping the hot tub clean, and regularly changing the water can also help to keep the hot tub in good condition. It’s also important to keep an eye on the hot tub’s chlorine or bromine levels, to ensure that they are within the recommended range for safe use.

It’s important to note that active oxygen tablets should not be used in combination with chlorine or bromine, as the combination can create harmful by-products.