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Evo UV
EA UV Logo

Professional ultraviolet clarifiers for ponds

Evolution Aqua’s pond UV clarifiers deliver even greater performance and improved serviceability. Our range of six evoUV pond clarifiers are made using the very latest technology and design techniques, ensuring there is even water flow through the unit, and optimum ultraviolet light penetration.

One new feature is the ease of the serviceability of the evoUV. Changing bulbs, quartz sleeves or replacing a ballast are quick and simple to do.

The evoUV is simple to install, with universal mounting plates allowing you to fix the unithorizontally or vertically, or at any angle you choose.

EvoUV Range

Overview of Features

  • Improves water clarity by eradicating green water
  • High output, energy efficient ballast
  • Fully serviceable for easy maintenance
  • Easy to install
  • Available in six models
  • 2 year guarantee

Specifications

ModelMax. pond sizeOptimum flow rateMax. flow rateBulb PowerInlet/OutletFittings supplied
EVO1515,000 Litres
3,300 UK Gallons
4,000 US Gallons		5,000 Litres/hr
1,100 UK Gallons/hr
1,320 US Gallons/hr		7,500 Litres/hr
1,650 UK Gallons/hr
1,800 US Gallons/hr		15W
(1 x 15W T8)		1½"2 x 1½"
Threaded Hosetails
EVO2520,000 Litres
4,400 UK Gallons
5,300 US Gallons		7,500 Litres/hr
1,650 UK Gallons/hr
1,800 US Gallons/hr		10,000 Litres/hr
2,200 UK Gallons/hr
2,500 US Gallons/hr		25W
(1 x 25W T8)		1½"2 x 1½"
Threaded Hosetails
EVO3030,000 Litres
6,600 UK Gallons
7,900 US Gallons		12,500 Litres/hr
2,750 UK Gallons/hr
3,300 US Gallons/hr		15,000 Litres/hr
3,300 UK Gallons/hr
3,500 US Gallons/hr		30W
(1 x 30W T8)		1½"2 x 1½"
Threaded Hosetails
EVO5555,000 Litres
12,100 UK Gallons
14,500 US Gallons		15,000 Litres/hr
3,300 UK Gallons/hr
3,500 US Gallons/hr		20,000 Litres/hr
4,400 UK Gallons/hr
5,000 US Gallons/hr		55W
(1 x 55W T8)		1½"2 x 1½"
Threaded Hosetails
EVO7575,000 Litres
16,500 UK Gallons
19,500 US Gallons		17,500 Litres/hr
3,800 UK Gallons/hr
4,600 US Gallons/hr		25,000 Litres/hr
5,500 UK Gallons/hr
6,000 US Gallons/hr		75W
(1 x 75W T8)		1½"2 x 1½"
Threaded Hosetails
EVO11075,000 Litres
16,500 UK Gallons
19,500 US Gallons		20,000 Litres/hr
4,400 UK Gallons/hr
5,000 US Gallons/hr		25,000 Litres/hr
5,500 UK Gallons/hr
6,000 US Gallons/hr		110W
(2 x 55W T8)		2"No Fittings Supplied

Useful Information

FAQs: provide answers to the most frequently asked questions. Start typing the product name + your questions in the search box. Or click here to access the FAQs databse.

evoUv Manual

evoUV Manual

evoUv Manual

evoUV Spare Parts List

evoUV Spares

evoUV Spares

evoUV Replacing Ballast Box

evoUV Replacing Ballast Box Instructions

Dealer Locator

How the evoUV works

The evoUV range of clarifiers have been designed to clear green water which is caused by single celled green algae and prevent it from returning. They will work alongside many different filtration systems but when used alongside Evolution Aqua’s pond filtration systems, the evoUV will help to deliver crystal clear and healthy pond water.

Your evoUV professional quality UV can be connected to your pond pump and filter with flexible hose using the stepped hosetails provided, or you can install the unit using hard pipe.

Image

Installing the evoUV

PUMP-FED INSTALLATION

Install evoUV before the filter on the pipework run from the pond

EvoUV Pump Fed

GRAVITY-FED INSTALLATION

Install evoUV after the filter on the return to pond pipework run.

EvoUv gravity Installation

Dimensions

evo15 and evo25

The overall dimensions of evo15 and evo25 are identical. They are 540mm (l) x 116mm (w) x 153mm (h) excluding hosetails. The distance between the centre of the inlet and the centre of the outlet is 319mm. The evo15 uses a standard length 15W T8 UV bulb and the evo25 uses a standard 25W T8 UV bulb.

evo15 and evo25 Dimensions

evo30 and evo55

The overall dimensions of evo30 and evo55 are identical. They are 990mm (l) x 85mm (w) x 153mm (h) excluding hosetails. The distance between the centre of the inlet and the centre of the outlet is 768.5mm. The evo30 uses a standard length 30W T8 UV bulb and the evo55 uses a standard 55W T8 UV bulb.

evo30 and evo55 Dimensions

evo75

The overall dimensions of evo75 are 1293mm (l) x 85mm (w) x 153mm (h) excluding hosetails. The distance between the centre of the inlet and the centre of the outlet is 1071.5mm. The evo75 uses a standard length 75W T8 UV bulb.

evo75 Dimensions

evo110

The overall dimensions of evo110 are 990mm (l) x 195mm (w) x 280mm (h). The distance between the centre of the inlet and the centre of the outlet is 768.5mm. The evo110 uses two standard length 55W T8 UV bulbs.

evo110 Dimensions
evouv questions
What does an evoUV do?
UV Clarifiers clear green water which is caused by single celled green algae and prevent it from returning.
Read More
Where do I install the evoUV?
Usually the UVC will be the first piece of equipment after the circulation pump. On a pump fed filtration system this means the UVC will be installed before the pond filter, and on a gravity fed filter after the circulation pump that returns the water to the pond.
Read More
What is the length of the power cable on an evoUV?
The length of the power cable for UK models is 2.2metres.
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How often do I need to replace the lamp on an evoUV
We recommend changing the lamp at the beginning of each year.
Read More
What fittings are required to plumb the evoUV in?
The 15,25,30,55 and 75watt models come supplied with 1.5" hosetails, you can also hard plumb using 1.5" BSP male fittings. You can find these fittings at the following links single-union...
Read More
Do evouv's come with bulbs?
Yes, bulbs and quartz sleeves are included in the box when you purchase an evoUV
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Are the bulbs and quartz sleeves pre-fitted on an evoUV?
No, we encourage the user to gain experience in fitting the UV bulb and quartz sleeve, as they will need to do it every year in the future when they replace old bulbs with new. There are fitting instructions included in the user manual.
Read More
Are UV rays harmful?
Yes, never look at a lit bulb as it can damage eyes and skin. To check if a bulb is lit up, view the closed unit at night. UV protective fittings will glow in the dark, indicating that the bulb is connected properly, and working.
Read More
What is an evouv quartz sleeve?
It’s a tube that looks like it’s made of glass, which separates the pond water running through the unit, from the bulb. It’s very delicate, like glass, and should be handled with extreme care. Quartz sleeves should be cleaned regularly to ensure that the UV rays can shine through it, and do their job...
Read More
Why is there no plug on my evouv?
evoUV adheres to UK pond equipment laws, and requires that it is wired into a safe, compliant, outdoor electrical system, ideally with an RCD cut-off. If you are unsure, consult a qualified electrician.
Read More
My green water isn’t clearing. Why?
Check that bulb is connected properly, and that the unit is wired in correctly, and on. UV should be on for 24 hours per day. Consult the recommended flow rates on the packaging. If water flow through the unit is too great, the contact time with the UV rays may not be long enough. Slow down flow with...
Read More
What replacement bulbs should I buy for my evouv?
Evolution Aqua distribute and recommend Osram, a world leader in UVC technology. Obtain these from an authorised Evolution Aqua dealer.
Read More
Are evoUVs suitable for saltwater?
Yes, all The evoUV clarifiers are suitable for saltwater, the Aquarium UV Sterilizer is made specifically for marine aquariums and is available in 15 and 25watt versions with additional fittings for connection to typical...
Read More
How do I set-up and install an evoUV?
You can follow the step by step instructions located in the manual below or you can watch our YouTube video here: evoUV Manual

Watch how to install an evoUV:...
Read More
My pond water is not clear, is this due to the evoUV not working correctly?
Koi, goldfish and other pond inhabitants can cause murky water by stirring up the bottom of the pond. This murky water should not be confused with suspended algae. Always check all your pond filtration is working and is being maintained correctly prior to checking the evoUV. Mechanical filtration is...
Read More
My UV Bulb is not lit on my evouv, what should I do?
You need to investigate the power to your unit. Has your RCD tripped? If yes, check your wiring and reset. Examine the UV bulb for signs of failure, and replace if necessary. Is the UV bulb fitted correctly? Unscrew the end caps and ensure correct fitting as per the instructions as described in...
Read More
My UV was working but my pond has gradually been turning green, why?
Quartz sleeve may have become dirty and requires cleaning. Also make sure you have the right model for your pond size. Ensure your pond filtration is removing fish waste and debris efficiently. Dirt in ponds will affect the efficiency of the evoUV. Check that your pond water volume is pumping through...
Read More
My evouv appears to be leaking from the end fittings?
This could possibly be caused by an incorrectly fitted, damaged or overtightened O-Ring on the quartz sleeve. Please check the quartz sleeve O-Ring, reposition it or if necessary replace it with a new one. Follow the steps on page 14 in the manual to test. To view the manual, ...
Read More
How can I insulate my unit for the cold weather?
The key thing is to make sure the UV is never turned off. The unit could be wrapped in loft insulation and then a waterproof membrane if you live in a very cold area.
Read More
What size evoUV do I need for my pond?
For help choosing the correct UV that is suitable for your pond. Please see the table below.

Read More
Which side is the inlet and outlet on my evouv?
The inlet and outlet can be installed either left (Inlet) to right (Outlet) or right (Inlet) to left (Outlet).
Read More
What do I need to reduce a 110W evouv from 2" to 1.5"
If you intend to use flexible hose, you would need:

2 x 2-1.5’’ reducing bushes – EA Code: R81-063 2 x 1.5’’ pressure to waste sleeves – EA Code: ...
Read More
How do I change the T8 Sockets and Black End Caps?
Watch the step by step video below to learn how to change the T8 Sockets and Black End Caps on an evoUV.

The Same process would follow for both old and new versions of our evoUV's
Read More
How do I change the ballast on a pre-2021 evouv?
To change the ballast on a pre-2021 evouv watch the video below for the step-by-step process.


Read More
How long after I install the evoUV will my pond become clear?
There are many factors which affect how long your evoUV will take to clear your pond, such as the levels of nutrients available to the algae, the water temperature and the level of sunlight. Assuming that you have installed the correct size unit, most ponds should clear within 3-14 days. However, this...
Read More
What is the recommended flow of water for an evoUV 55?
The optimum flow rate of an evo55 is 15,000 litres per hour. The maximum flow rate of an evo55 is 20,000 litres per hour. For all evoUV models, the recommended flow rate is based on what allows you to pass the entire volume of your pond through the evoUV once every 2 to 3 hours. For optimum performance...
Read More
How do I change the bulb and quartz sleeve on an evoUV?
p>Watch the step by step video below to learn how to change the bulb and quartz sleeve on an evoUV.
Read More
How do I change the ballast box on a 15W/25W evoUV?
For step by step instructions, you can use the manual or you can watch the video tutorial below

Read More
How do I change the ballast box on a 30W evoUV and larger?
To learn how to change the ballast box, you can use the manual or watch the video tutorial below.
Read More
How do I use single unions for solvent weld hosetails on an evoUV?
Learn how to use single unions for solvent weld hosetails on an evoUV.
Read More
How do I reduce a 110W evoUV to 1.5" using single unions?
How to reduce a 110W evoUV to 1.5" using single unions
Read More
How do increase my evoUV from 1.5" to 2" pressure pipe using straight eazy connectors?
How to increase from 1.5" to 2" pressure pipe using straight eazy connectors on an evoUV
Read More
How do I setup a 110W evoUV using 2" Double Union Ball Valves?
How to setup a 110W evoUV using 2" Double Union Ball Valves
Read More
How do I setup a smaller evoUV using 2" Double Union Ball Valves?
How to setup a smaller evoUV using Double Union Ball Valves
Read More
How do I replace the ballast box on a 110W evoUV?
How to replace the ballast box on a 110W evoUV
Read More
How do I setup a 110W evoUV using a Flexi Pipe Kit?
How to setup a 110W evoUV using a Flexi Pipe Kit
Read More
How do I use single unions for pressure pipe on a smaller evoUV?
How to use single unions for pressure pipe on an evoUV
Read More
Did you find what you were looking for?

evoUv Manual

evoUV Manual

evoUv Manual

evoUV Spare Parts List

evoUV Spares

evoUV Spares

evoUV Replacing Ballast Box

evoUV Replacing Ballast Box Instructions

Dealer Locator