Tempest Filter
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Innovative Polisher For Ponds

The NEW Tempest Filter is an innovative polishing system for ponds. The Tempest Filter uses our latest filtration media, K+Media, to deliver crystal clear, healthy water.

Designed to be used in conjunction with any filtration system, the Tempest Filter offers additional mechanical and biological filtration. The Tempest Filter can be installed on a variety of set-ups and can be used on quarantine systems or as astandalone filter on smaller ponds up to 5,000 Litres / 1,100 Gallons /1,320 US Gallons.

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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Patent Pending Design

The Tempest filter iseasy 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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Independently Tested Filter Media

Using Evolution Aqua’s K+Media as the filter media, particles down to one micron can be filtered. On a single pass, testing has proven our media capable of removing all particles down to 25 micron when used at the optimum flow rate. Not only that, K+Media is the result of extensive research and development and is moulded with minerals for faster maturation times. 

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Evolution Aqua filter media has been independently tested by IFTS (Institut de la Filtration et des Techniques Séparatives). IFTS International Filter Testing Services is the international reference for solid-liquid separation. Founded in 1981, IFTS is an independently regulated, ISO 17025 accredited, laboratory and research center focusing on liquid filtration and separation science. IFTS quality management system is certified to ISO 9001:2015.

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How The Tempest Filter Works

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.

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How To Clean The Tempest Filter

The Tempest Filter can be cleaned in matter of minutes, by simply turning the pump off, closing slide valves and opening the waste valve tap.

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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
27 Litres
5.9 UK Gallons
7.1 US Gallons
1055mm x 250mm x 205mm7 Litres

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 aby-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.

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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.

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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.

Frequently Asked Questions

Follow the steps below to clean the Tempest filter:

STEP 1: Switch pump off.

STEP 2: Close all slide valves on inlet and outlet.

STEP 3: Open the tap(s) on the waste valve assembly. Air enters the filter causing the filter media to move and clean as the water drains to waste.

STEP 4: Once the water has emptied from the filter(s) and the media sinks to the bottom, close the tap(s) on the waste valve assembly.

STEP 5: Open all slide valves on inlet and outlet.

STEP 6: Turn pump back on. Water will re-fill the tube and media will rise to the top.

Tempest Filter - Cleaning

K+Media is designed and manufactured 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 the 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.

Total surface area = 1,350m2 per m3

Protected surface area = 1,025m2 per m3

Diameter = 10.2mm

Length = 8mm

 

 

 

1. Check the air valve is not blocked.

2. Check the slide valves are fully closed.

3. If the media is very dirty this may cause the pack to clump together.Multiple cleans should clear this.

4. If the white end cap at the bottom of the filter is full of waste it is possible to clear this by switching off the pump and unscrewing the waste valve assembly, allowing the blockage to clear.

It will take a few days before the media starts to behave as it should. During this time it is likely to clump together and not agitate freely during cleaning. This will only last a few days.

The white end cap at the bottom of the filter may be full of waste. It is possible to clear this by switching off the pump and unscrewing the waste valve assembly, allowing you to clear the blockage.

Check the O-ring is seated correctly on the inside of the waste valve assembly.

The white end caps at the top and bottom of the filter are glued on. It is possible to unscrew the waste valve assembly at the bottom of the filter once the pump is turned off and the filter has been emptied during a cleaning cycle. This will allow you to access the inside of the cap to clear out any waste or debris. There is a grill plate inside the end cap to prevent the media escaping which can also be cleaned carefully. The inside of tube will clear accordingly every time the media in the Tempest is cleaned and water flushes to waste.

The Tempest arrives pre-filled with 7 litres of K+Media. You also receive the waste valve assembly, which simple screws onto the bottom of the filter, two slide valves and connection pipes which must be fitted using solvent weld adhesive to the inlet and outlet, and two pipe clips to help wall mount the filter. Wall fixings are not provided.

Tempest Filter Manual

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