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Dormer Cottage, Spurgrove Lane, Little Frieth,

Nr. Henley on Thames, Bucks, RG9 6NU

Phone/Fax: 01494 882600

Order Hotline: 07814 011357

Koi Pond Rotary Drum Filters, Pre-Filter Sieves and Vortexes

At Koi Water Garden, we are able to offer competitive prices on not only high quality Koi, but also on Koi related goods such as Rotary Drum filters and other mechanical pre-filters.

 

last updated 9th May 2022

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See Also:--

 

 

How to choose the right filter

 

Special package prices

 

Interested in any Filter + pump, + UV and Air pump ? Special package prices are available - the more you buy the better the component prices become! Ring or email for package prices.

 

Rotary Drum Filters

 

Drum filtration has been in use for many years, both by the municipal water industry and the commercial fish farming industry as well as for other industrial applications.

 

Only in the last four or five years however have units begun to be designed and marketed specifically for the Koi market.

 

Drum filters represent the most amazing , truly efficient and effective maintenance free mechanical filters ever conceived.

 

Essentially they trap solids down to micron size, as low as 60 microns, preventing dirt and detritus from entering the biological filter and help to produce amazingly clear water. As the filter screens inside the drum get dirty the electronics inside recognise this and start an automatic wash cycle without any intervention whatsoever.

 

Incoming pond water passes through to the inside of the large drum which has stainless steel screens enclosing the drum - so the incoming water must pass through the screens on its way to the next stage of the filter. As it does so, all the dirt is left on the screen. As and when the screens starts to get blocked, a wash cycle is started and high pressure water jets wash off the screen from the outside, washing all the accumulated dirt into a special trap inside the drum, where it is led to waste. The drum and screens also rotate to ensure complete and precise washing of the screen at each cleaning cycle. The wash process is completely automatic, but can also be manually controlled, and with some models set to wash at specific time intervals as well.

 

Filtreau HF30 Drum Filter

 

 

The Filtreau HF30 drum filter is the latest of the budget drum filters now available. designed as a pre-filter for Koi ponds and will handle ponds of up to 15,000 gallons or more. - Max. flow 30m³/h, Suited for both pump fed and gravity fed operation, 2 x 110mm inlet, 2 x 110mm outlet and small footprint - Size 93 x 48 x 52.5 cm (L x W x H).  

 

The HF30 Drum Filter is supplied with a professional, software based controller. A high pressure cleaning pump is available as an option. It has a low installation height of just 12cm above the water level and is a perfect solution for those wishing to install an affordable drum filter. The drum filter has two 110mm Inlet connections and two 110mm outlet connections for connecting multiple pumps or for gravity exit into a bio chamber.

 

 

Filtreau HF30 Specification

 

 

The Filtreau HF30 Drum Filter Features:-

 

Input: 2 x inlets 110mm

Outlet:2 x outlet 110mm

110 mm Waste outlet

Max flow rate 6600 gph (30000 lph) gravity 4000 gph (18000 lph) Pumped

Screen : 70 micron stainless steel 316  Flat jet nozzles

Control box IP 44 min.

control on Manual control push button

Pumped or Gravity applications

Optional 40bar high pressure cleaning pump

All components are modular and quickly changeable

Body dimensions: 93 x 48 x 52.5 cm (L x W x H) incl. waste collector

CE compliant

2 year warranty on all parts (ex. screen elements)

 

Size Price
Filtreau HF30 Drum Filter £1155.00
High pressure cleaning pump £139.95

 

 

Above: Filtreau HF30 drum filter

 

 

 

Aquaforte Rotary Drum Filters

 

The Aquaforte Drum filter is designed as a pre-filter for larger ponds and will easily handle ponds of up to 12,000 gallons or more. It features - Individual, exchangeable, screen elements of 60 micron - Max. flow 25m³/h, injection moulded housing made of HDPE, 48VDC motor, Suited for both pump fed and gravity fed operation, 3 x 110mm inlet, 2 x 110mm outlet and tiny footprint - Size (L x W x H): 47 x 57 x 43 cm. Size incl. connections and motor: 50 x 70 x 43cm. But the best thing is the price!  

 

The Aquaforte Dum Filter is supplied with a professional, software based controller and it will clean either using mains water pressure (simply connect a hose pipe) or an optionally available pressure pump (recommended) to clean the filter as part of the automated backwash cycle. The Aquaforte Drum Filter has a low installation height of just 10cm above the water level and is a perfect solution for those wishing to install an affordable drum filter.
The drum filter has two 110mm Inlet connections and two 110mm outlet connections for connecting multiple pumps or for gravity exit into a bio chamber. The waste outlet is also 110mm in size.
The Aqua Forte Drum Filter can accommodate flow rates up to 25m³/h (5500 gallons per hour), and the controller with it's custom software contains many safety options and functions including motor slow start, motor amp protection, manual cleaning button and standard hourly cleaning etc.

Aqua Forte Drum Filter product Features:
- Extra Low Installation Height - 10cm above water level
- Individual, exchangeable Screen elements of 60 microns
- Max flow 25m³/h
- Controller with custom software including many safety options like Motor Slow Start, Motor Amp Protection, manual cleaning button and standard hourly cleaning etc.
 - Injection moulded housing made of HDPE, white parts made of POM (polyoxymethylene, a hard and strong polymer).
- 48v DC Motor
- Suited for pump and gravity fed operation (inlet and suited for pump fed and gravity fed operation (inlet chamber and drum chamber are both fitted with a mounting bracket for the float switch). Float switch can be easily adjusted in height.
- 3 x Ø110mm inlets, 2 x Ø110mm outlets
- Ø50mm connections in inlet chamber and drum chamber in the top and the bottom.
- Centered position for a 40 watt submersible amalgam lamp (just drill a hole for the tank connector at the centered spot)
- Only 1 cable from controller to drum filter (this will divide into 3 cables: motor, float switch and cover switch)
- Fitted with cover switch (cuts the power off to the motor, cleaning pump and UV-C unit for safety). Size:
(L x B x H): 47 x 57 x 43 cm. Size incl. connections and motor: 50 x 70 x 43cm.

 

Aquaforte Drum Filter specification

Amazingly small size but with huge performance, the Aquaforte Drum filter is interchangeable as a gravity or pumped unit, will handle flows of up to 5500 gallons per hr (25 cu m per hr) and is made to house a submersible UV if required!

 

Comes complete with white translucent lid, threaded inlet and outlet connections for high pressure pump feed and return and 4" rubber blanking plugs for main inlet and outlets. Optional connection kit for high pressure pumps includes:- 3m of 1" pressure pipe, inlet and outlet threaded sockets for pump and drum body, 2 x 1" ball valves, 2 x 1" single unions, and 6 x 1" 90 deg bends.

 

 

 

 

Size Price
Aquaforte Drum Filter £1520.00
Optional clear lid for drum filter £179.00
High Pressure cleaning pump £199.00
Optional connection kit for high pressure pump £69.95

Oase Rotary Drum Filters

 

 

There are now four models in the Oase range, the largest, the Profi Clear Premium XL is designed as a pre-filter for very large ponds and will easily handle bodies of water of up to 55,000 gallons or more. The Biotec Premium is a self contained filter system featuring biological as well as mechanical filtration and is designed as a complete filter system for smaller ponds. The Proficlear Premium Compact M Drum is the smallest drum filter in the Oase range and is designed as a complete filter system for small to medium sized ponds and features the Helix biological moving bed media technology. With this model the volume of biological media can be increased to match the fish population. The mid range Profi Premium DF-L is a mechanical pre-filter only and is designed for ponds up to around 12,000 gallons.  

 

 

We have decided to market the Oase Drum filter range unit for a number of important reasons:-

 

  • Most effective filter performance with flow rates of up to - 25 m³ (5500 galls) for Profi Drum, and 16.5 m³ (2750 galls) for other models - per hour for crystal clear water.
  • Unique, completely automatic self cleaning offers minimal maintenance.
  • Flexible use, ideal for gravity or pump fed systems
  • High quality product, developed to a high standard in Germany.
  • Extensive VDEP tested, certified safe function.
  • A micro control system oversees and operates the main functions and is easy to use.
  • 3 Year warranty! The only drum filter on the market offering this level of support
  • Small footprint, compact design
  • Most cost effective drum filter available for Koi pond applications - less than half the cost of some competing units!
  • Very flexible in use - 4 x 110mm inlets and 2 x 150mm outlets (Profi Drum Variants).
  • Segmented screen sections allow easy cleaning or replacement of individual elements without removing the drum.
  • Produced by one of the worlds largest and most reputable Aquatics companies who offer unrivalled levels of customer after care and support

 

 

ProfiClear Premium DF-L

 

 

The mid range Profi Premium DF-L is a mechanical pre-filter only and is designed for ponds up to around 12,000 gallons.

 

ProfiClear Premium DF-L

 

Above: Proficlear Premium DF-L filter with lid removed and working at our premises. We now have four of these units fitted to four separate ponds at our premises, including both of our larger stock ponds of 4,500 gallons.

 

Above: ProfiClear DF-L Drum filter cut away

 

 Specification. ProfiClear Premium DF-L

 

 Width 830mm, Length 600mm, Height 820mm

 Power consumption 5 watts

 Power consumption cleaning 75 Watts

 Cable length 7 metres

 Net weight 70 kg

 Guarantee 2 + 1 years

 Microcontrol unit

 Coarse debris to 60µM

 Number of nozzles 4

 Cleaning flow rate 2.5 l/min

 Waste pump Ebara 6 bar

 Automatic purging by:   sensor, time interval, manual

 Drum diameter in mm 516

 Waste basket width 370 mm

 Number of sieve elements (unit) 8

 Filter intake surface in cm² 4200

 Material GRP thermoset/stainless steel

 Number of inlets 4 (Gravity), 2 (Pumped)

 Connections, inlet DN110 (gravity) 50mm (Pumped)

 Number of outlets 2 150 mm

 Connections, sludge discharge N 70, DN 110

 Max Flow rate, 33,000 lph (Gravity) 25,000 lph (Pumped)

 Installation height over water level in cm 13

 Possible water-level difference in cm 10

 

Profi Drum Video

 

 

 

Type Price
ProfiClear Premium DF-L Gravity £3549.99
ProfiClear Premium DF-L Pumped £3549.99
Sieves, 30 micron set of 8 - ProfiClear Premium DF-L £199.50
Sieves, 60 micron set of 8 - ProfiClear Premium DF-L £199.50
Sieves, 150 micron set of 8 - ProfiClear Premium DF-L £199.50
ProfiClear Premium DF-L Filter connected to Nexus

 

Above: ProfiClear Premium DF-L filter coupled to a Nexus 210 at our premises. Since incorporating this drum filter in April 2012 - we have not needed to clean our Nexus AT ALL !

 

 

Above: Spare sieve element for Profi Drum.

ProfiClear Premium DF-XL

 

 

The Profi Clear Premium XL is the largest drum filter in the Oase range with a double drum and is designed as a pre-filter for very large ponds and will easily manage bodies of water of up to 55,000 gallons or more.

 Specification. ProfiClear Premium DF-XL

 

 Dimensions (L x W x H) mm 1330 x 875 x 820

 Power consumption 5 watts

 Power consumption (cleaning) 75 Watts

 Cable length 10 metres

 Net weight 125 kg

 Guarantee 2 + 1 years

 Microcontrol unit

 Coarse debris to 60µM

 Number of nozzles 8

 Cleaning flow rate 2.5 l/min

 Waste pump Ebara 7 bar

 Automatic purging by:   sensor, time interval, manual

 Drum diameter in mm 2 x 516

 Waste basket width 370 mm

 Number of sieve elements (unit) 16

 Filter intake surface in cm² 6900

 Material GRP thermoset/stainless steel

 Number of inlets 7 (Gravity), 2 (Pumped)

 Connections, inlet DN110 (gravity) 50mm (Pumped)

 Number of outlets 2 180 mm

 Connections, sludge discharge N 70, DN 110

 Max Flow rate, 66,000 lph (Gravity) 50,000 lph (Pumped)

 Installation height over water level in cm 13

 Possible water-level difference in cm 10

 

Profi Drum Video

 

 

 

Type Price
ProfiClear Premium DF-XL gravity £5099.99
ProfiClear Premium DF-XL Pumped £5099.99
Sieves, 30 micron set of 8 - ProfiClear Premium DF-L and XL (two sets required for XL) £199.50
Sieves, 60 micron set of 8 - ProfiClear Premium DF-L and XL (two sets required for XL) £199.50
Sieves, 150 micron set of 8 - ProfiClear Premium DF-L and XL (two sets required for XL) £199.50

 

 

Note: that two sets of the above sieves are required for the DF-XL model drum filter

ProfiCleaar Premium DF-XL

 

Above and below: ProfiClear Premium DF-XL drum filter.

 

 

 

 

 

ProfiClear Premium Compact M

 

 

The Proficlear Premium Compact M Drum is the smallest drum filter in the Oase range and is designed as a complete filter system for small to medium sized ponds and features the Helix biological moving bed media technology.

 Specification. Proficlear Compact M

 

 Width 885 mm , Length 685mm, Height 820mm

 Power consumption 5 Watts

 Power consumption cleaning 75 Watts

 Cable length 10 m

 Net weight 70 kg

 Guarantee 2 + 1 years

 Microcontroller

 Coarse debris to 80µM

 Number of nozzles 2

 Cleaning flow rate 3.5 l/min

 Waste pump Ebara 4 bar

 Automatic purging by:   sensor, time interval, manual

 Number of sieve elements (unit) 4

 Filter intake surface in cm² 3820

 Material GRP thermoset/stainless steel

 Number of inlets 2 (Gravity), 2 (Pumped)

 Connections, inlet DN110 (gravity) 50mm (Pumped)

 Number of outlets 2, 150mm

 Connections, sludge discharge N 75, DN 110

 Max Flow rate, 16,500 lph (Gravity) 12,500 lph (Pumped)

 Installation height over water level in cm 13 (gravity) 32cm (Pumped)

 Possible water-level difference in cm 10

 

Proficlear Compact Video

 

 

Type Price
Proficlear Compact Drum Gravity £2449.99
Proficlear Compact Drum Pumped £2499.99
Sieves, 60 Micron set of 6 - Compact and Biotec Premium £169.50

Above: Proficlear Premium Compact Drum.

 

Drum filter accessories

 

 To keep the drum filter operating at its most efficient, clean the sieve elements once per year with Oase pump clean, which has been specially formulated to remove limescale and other contaminants from metal and plastic surfaces to keep them free of contamination caused by limescale build up. Also great for cleaning pump impellors. In very hard water areas it may be advisable to carry out this cleaning process more regularly. To clean any item, dilute the pumpclean in a suitable sized container as recommended and immerse the sieve/pump for 24 hours to remove all traces of contamination.

 

Oase Pump Guard is an electric, solenoid operated water top up system that senses water level drop and automatically turns on the water supply to top up the system - a must with drum and combination filters as they use water all the time for self cleaning.

Type Price
Pump Guard £429.95
Pump Clean 500ml £13.95

 

Above: Pump Clean liquid.

 

Above: Pump Guard, Auto top up system.

Automatic Water Top Float switch 

This super but simple auto-top up float switch can be fitted even in the tightest of spaces, and was designed originally for use in the Oase range of drum filters. This neat and adjustable float valve, easily located in a filter tank or similar, acts as a simple switch to activate a valve which turns on and off the water supply as required. The float can be adjusted from a fully horizontal to fully vertical position giving a huge amount of flexibility to the installation point.

 

 

 

Product Price
Float Switch £39.95
 Automatic water top up float valve
Automatic water top up float valve

Inlet strainers for high pressure pumps 

If you purchase, or plan to purchase a drum filter which uses an external high pressure pump for the cleaning cycle, then this requires a connection to a clean water supply. A popular method of achieving this is to take water from the clean side of the drum chamber in the filter. In order to ensure that the water supply is mechanically clean, an inlet strainer should be fitted to ensure that the washer jets within the drum stay clean. So here we offer a range of stainless steel strainer attachments that can be simply installed to catch any unwanted detritus and prevent it entering the pump and washer jet circuit. The range of strainers utilises BSP male threads in order to simply screw into the appropriate sized female threaded socket. Available in 1.5", 2" and 4" sizes.

 

 

 

Product Price
1.5" strainer £9.95
2" strainer £12.95
4" strainer £19.95
 stainless steel strainer

Large Vortex

Large Vortex Free standing large Vortex - Fibreglass with 1.5" drain, 4" inlet and 4" outlet. Made for solvent weld waste pipe fittings but can be used with pressure pipe with appropriate pipe adaptors (not included) Dia 90cm & H120cm.

 

 

Size Price
90cm dia x 120cm high £395.00
Delivery costs from £29.50 depending on Postcode
 Large Vortex

Cetus Pre-Filter sieve

The Cetus pond sieve is a very efficient mechanical filter which can be fitted directly to a bottom drain or to a skimmer. It can be pump or gravity fed and incorporates a patented floating weir system which regulates the water level in the unit, and ensures a constant and even curtain of water flow over the stainless steel filter screen regardless of pump size. Water is pumped from the base of the unit back to the pond (or to the next stage of your filter) and the unit features a drain valve to remove solids which collect in the debris trap.

Specification Price
Pumped £590.00
Gravity £590.00
Delivery costs from £25.00 depending on Postcode
Cetus Sieve

 

Cetus Sieve in Use
Cetus Cutaway drawing

The stainless steel screen is 300 micron to ensure very fine solids can be removed, and owing to the curved 'ski slope' design of the screen, it cannot block.

 

Cetus are built in the same way, and from the same materials as the Nexus filter range, so they are remarkably strong, simple and yet very light. Dimensions 95cm high, 85cm deep and 55cm wide Delivery Cost from £29.50 - please contact us for exact delivery quote.

 

Cetus pond sieve shown in use (far left) and trapping solids

 

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