Tempest Filter
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Innovative Polisher For Ponds

Introducing the new Tempest from Evolution Aqua. The Tempest filter is an innovative polishing system for ponds that will help to deliver crystal clear, healthy water. Designed to be used in conjunction with any filtration system, the Tempest offers additional mechanical and biological filtration. The Tempest filter can also be used on quarantine systems or as astandalone filter on smaller ponds up to 5,000 Litres / 1,100 Gallons /1,320 US Gallons.

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The Tempest filter is easy to install and is simple and quick to clean, by way of a unique, patent pending air syphon design. During the cleaning process, air is drawn into the filter as it empties which causes the water to agitate, effectively cleaning the K+Media.

Using Evolution Aqua’s K+Media as the filter media, particles down to one micron can be filtered. Not only that, K+Media is the result of extensive research and development, moulded with minerals for faster maturation times.

Evolution Aqua filter media has been independently tested by
IFTS (Institut de la Filtration et des Techniques Séparatives).

Faster maturation times

The Tempest filter is easy to install and is simple and quick to clean, by way of a unique, patent pending air syphon design. During the cleaning process, air is drawn into the filter as it empties which causes the water to agitate, effectively cleaning the K+Media.

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Now even easier to upgrade to automatic cleaning 

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INLET:1½” (UK / USA) / 50mm (EU) 
OUTLET:1½” (UK / USA) / 50mm (EU) 
DRAIN SIZE:1” (UK / USA) / 32mm (EU)
MAXIMUM FLOW RATE:7,500 LPH / 1,650 GPH / 1,980 US GPH 
OPTIMUM FLOW RATE:5,000 LPH / 1,100 GPH / 1,320 US GPH 
K+MEDIA SUPPLIED:7 Litres 
DIMENSIONS (Excluding Slide Valves):1055mm x 250mm x 205mm
WATER VOLUME IN FILTER:27 Litres / 5.9 Gallons / 7.1 US Gallons

How Tempest Works and Cleans

Water is pumped up through the Tempest filter. The K+Media moves to the top of the filter, becoming a mechanical barrier that traps debris as it flows through the system. Waste is trapped in the K+Media until the cleaning cycle dislodges it and it gets flushed away.


With the pump turned off, slide valves closed, and waste valve open, air is drawn into the filter. As air and water mix inside the filter tube, the media starts to move chaotically, dislodging the trapped waste. Dirty water then exits the filter tube at the bottom via the waste line, leaving clean media.

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Installing the Tempest Filter

There are a number of ways the Tempest Filter can be installed on your pond system. Below are some typical installation ideas.

PLEASE NOTE: The slide valves fitted to the Tempest Filter allow connection to 1½” pressure pipe. If installing the Tempest Filter using flexible hose you will need to fit a reducing sleeve (EA Code: M35-050) and a 1½” solvent stepped hosetail (EA Code: HOSETAIL15) inside each slide valve.

To allow the Tempest Filter to give the best performance, it is important that the flow rate is no more than the 5,000 litres per hour. Some of the installation examples show a
by-pass that will enable you to increase the flow through the pond.

TYPICAL INSTALLATION WITH A GRAVITY-FED FILTER

You can install a Tempest Filter after a primary filter on a gravity-fed set-up, such as the Nexus+, and after a UV Clarifier, such as an evoUV. The slide valves on the Tempest Filter enable connection to 1½” pressure pipe.

The installation example shown below has a by-pass that will enable you to increase the flow through your pond while maintaining the optimum flow through the Tempest Filter. Installing ball valves on the pipe work will help you regulate the flow. The return from the Tempest can go back to the centre of your Nexus+
or back into the pond.

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TYPICAL INSTALLATION ON A PRESSURISED SYSTEM

You can install a Tempest Filter on a pressurised system with a K1 Micro Bead, Nexus+, EazyPod. The slide valves on the Tempest Filter enable connection to 1½” pressure pipe.

The installation example shown below has a by-pass that will enable you to increase the flow through your pond while maintaining the optimum flow through the Tempest Filter. Installing ball valves on the pipe work will help you regulate the flow. The return from the Tempest and the K1 Micro Bead go back to the pond.

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TYPICAL SKIMMER LINE INSTALLATION

You can install a Tempest Filter on a skimmer line.

The slide valves on the Tempest Filter enable connection to 1½” pressure pipe. If installing the Tempest Filter using flexible hose you will need to fit a reducing sleeve
(EA Code: M35-050) and a 1½” solvent stepped hosetail (EA Code: HOSETAIL15) inside each slide valve.

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MODULAR TEMPEST FILTER INSTALLATION

On larger systems that require a higher flow rate, multiple Tempest Filters can be installed in a modular system. The slide valves on the Tempest Filter enable connection to 1½” pressure pipe. If installing the Tempest Filter using flexible hose you will need to fit a reducing sleeve (EA Code: M35-050) and a 1½” solvent stepped hosetail (EA Code: HOSETAIL15) inside each slide valve.

It is impotant that each Tempest Filter can be isolated using the slide valves so that cleaning can be carried out independently.

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Although on the installation above we show two filters into one return line, independent return lines will allow you to observe the flow rate through both Tempest Filters and balance accordingly.

Specifications

Max Pond SizeInletOutletDrain SizeMax Flow RateOptimum Flow RateVolume of Water in FilterDimensionsAmount of K+Media Supplied
5,000 Litres
1,100 UK Gallons
1,320 US Gallons
1½” UK / USA
50mm EU
1½” UK / USA
50mm EU
1” UK / USA
32mm EU
7,500 Litres/hr
1,650 UK Gallons/hr
1,980 US Gallons/hr
5,000 Litres/hr
1,100 UK Gallons/hr
1,320 US Gallons/hr
25 Litres
5.5 UK Gallons
6.6 US Gallons
1100mm x 350mm x 200mm7 Litres
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New advanced filtration media

Plastic media, for use in biological pond filters - specifically in moving bed bio reactors, was pioneered by Evolution Aqua, some 20 years ago. In recent years, other plastic media have come onto the market, usually with the aim of trying to get more and more surface area. However, one drawback to using plastic media has always been the time it takes to establish a stable biofilm – essential for good filtration.

 After many years of research, Evolution Aqua have now developed a new media that not only gives class leading surface area, but also overcomes the problem of long maturation times.

K+Media is designed and manufactured in the UK by Evolution Aqua. This advanced media, with its innovative design, and class leading surface area provides enhanced biological and mechanical filtration.

 As Evolution Aqua extrude K+Media, Minerals and Enzymes are added to the raw material. The result of this process, unique to Evolution Aqua, is a filtration media that not only outperforms most of its competitors due to its large protected surface area, but also answers the problem of how to speed up the time taken to mature your filter.

K1
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Minerals added for faster filter maturation 

During the extrusion process, Evolution Aqua add a range of minerals, along with magnesium, calcium, enzymes and salt to the raw material that is used to manufacture K+Media. The result means that K+Media will mature much faster than many other types of media.

- The addition of these minerals creates a rough surface on the media. This textured surface has a microscopic honeycomb of peaks and craters that allow waste particles to collect, and nitrifying bacteria to form.

- The minerals act as a food source for the bacteria, helping the bacteria to develop and multiply at a faster rate, further improving maturation times.

- Calcium alone has proven advantages for developing and maintaining effective bio-films.

- The enzymes that are added also help to make the media “sticky” so waste particles can adhere to media easier.

- Salt is added during the extrusion process, which is dissolved during the cooling process, leaving a rough surface on which bio-film can easily adhere.

Increased surface area 

With a new shape and profile, K+Media has also been designed to have an increased and class leading surface area, meaning an overall surface area of 1,350m2 per m3. More importantly for biological filtration, the protected surface area of K+Media is 1,025m2 per m3.  This allows a stable bio-film to form and remain intact when used in moving bed biological filtration, as in the new Nexus+.

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Stable bio-film development

The shape of K+Media optimises the amount of “quiet zones” within the media where a stable bio-film can develop. Whilst K+Media keeps the integral profile of K1 Media at its core, there is an extra layer of cells and fins around the outside of each piece that enable microscopic organisms such as Rotifers and Vorticella to thrive. This is an additional benefit as competitor media do not have such “quiet zones” that would allow these higher lifeforms of filter feeders to develop. The bacteria and organisms that form within the bio-film ensure the media delivers optimum levels of biological filtration in the moving bed, which has been proven filtration technology for many years in the fishkeeping hobby.

Use with PURE Pond products 

Evolution Aqua also recommend using K+Media in combination with the PURE Pond and PURE+ Filter Start Gel to boost bacteria levels which in turn will stick to the media and speed up the maturation process even more.

Frequently Asked Questions

For step by step instructions follow the steps or watch our how to clean the tempest filter video below.

Diameter = 10.2mm Total surface area = 1,350m2 per m3 Protected surface area = 1,025m2 per m3 Length = 8mm

Make sure that the airline is in the correct position in the filter.

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