Koi Pond Combination Filters
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 the very best in Combination Filters.
last updated 14th March 2022
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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. |
Combination Filters
Combination filters are essentially the merging of two technologies, rotary drum pre-filters and moving bed biological filters into one combined unit. This saves space, plumbing complexity and the associated costs, and also of course the risks of a mismatch between two differing types of filters which may not work well together. In this way the whole filter becomes an automatic system, with virtually no maintenance required, since drum filters are almost 100% automatic in operation, and moving bed technology has proven to be just about the most efficient form of biological filtration available, being virtually maintenance free and very efficient. The brand new Superdrum, Filtreau and Oase Combi range are the latest of the new breed of combination filters to emerge onto the Koi filtration market place.
Oase 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 870 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 | £2449.99 | |
Sieves, 60 Micron set of 6 - Compact and Biotec Premium | £169.50 |
Above: Proficlear Premium Compact Drum.
Filtreau Combi 2
Available as two variants, one without the high pressure wash pump (select one yourself) or with its own on board wash pump ready to go. A further option is to order for moving bed bio media, such as Helix, or for a Japanese matting variant - again your choice - AND one version can easiliy be converted to the other, should you choose to do so at a later stage. All versions come complete with an on board submersible UV
.The Filtreau Combi 2 Features:-
- Ultra efficient mechanical filtration, combined with excellent efficient biological filtration, all in one very compact unit.
· Maximum Flow rate of 3300 gallons (15,000 litres) per hour
· 2 x 110mm inlets and 1 x 110mm outlet
· Fully automatic controller module
· 70 micron screen .
· Optional on board high pressure cleaning pump
· Direct drive
· 140 litre (max capacity)Bio chamber.
· Air curtain for bio section supplied
· Dimensions— External; 710mm x 1010mm x 550mm ( LxWxH )
· Designed for ponds up to 4400 gallons (20,000 litres)
· Supplied complete with submersible UV.
· Available in two version for moving bed or Japanese Matting media.
Size | Price | |
Filtreau Combi 2 MB | £1795.00 | |
Filtreau Combi 2 MB Complete | £2195.00 | |
Filtreau Combi 2 JM | £1795.00 | |
Filtreau Combi 2 JM Complete | £2195.00 |
Choose from above for Moving Bed Bio (MB). or Japanese matting Bio (JM) version. Complete versions have on board high pressure cleaning pumps as standard
Filtreau Combi 2
One of the smallest Combination filters yet - with great specification and performance at a very affordable price.
Filtreau Combi Next
One of the best value for money high spec Combination filters yet produced, with a hiuge bio chamber and high capacity drum, all packed into a very compact unit. Available as two variants, one without the high pressure wash pump , or with its own on board wash pump ready to go. Both versions come complete with an Amalgam on board submersible UV
.The Filtreau Combi Next Features:-
- Ultra efficient mechanical filtration, combined with excellent efficient biological filtration, , catering for ponds up to 10,000 gallons, all in one very compact unit.
· Maximum Flow rate of 6600 gallons (30,000 litres) per hour
· 3 x 110mm inlets and 2 x 110mm outlet
· Fully automatic controller module
· 70 micron screen .
· Optional on board high pressure cleaning pump
· Direct drive
· 340 litre (max capacity)Bio chamber.
· Air curtain for bio section supplied
· Dimensions— External; 930mm x 1040mm x 1020mm ( LxWxH )
· Designed for ponds up to 9900 gallons (45,000 litres)
· Supplied complete with submersible UV.
· Available in two versions for pumped or gravity filter systems.
Size | Price | |
Filtreau Combi Next Gravity | £2225.00 | |
Filtreau Combi Next Pumped | £2310.00 | |
Filtreau Combi Next C | £2499.00 |
Choose from above for Pumped or Gravity Filter systems. The Combi Next C comes complete with its own on-board wash pump for Gravity Filter systems
Filtreau Combi Next
One of the best value for money Combination filters yet - with huge performance and suitable for very large ponds at a very affordable price.


Superdrum Combi Bio 30
The Superdrum Combi Bio 30 Features:-
The Superdrum Combi Bio 30 offers ultra efficient mechanical filtration, combined with excellent efficient biological filtration, all in one compact unit.
Built to a very high standard, the filter features the following;
· Flow rate of 4400 gallons (20,000 litres) per hour
· 3 x 110mm inlets and 1 x 110mm outlet
· Fully automatic controller module
· 60 micron screen with Blanketweed and debris trap on drum.
· Lid with safety cut off switch
· 5.5 bar on board cleaning pump
· Ultra reliable drive motor
· Direct drive
· Filter can still be run if the drive motor fails
· 110 litre (max capacity)Bio chamber.
· Air curtain for bio section supplied
· Full 2 year warranty ( exc. screen)
· Dimensions— External; 990mm x 930mm x 770mm ( LxWxH )
· Drum Size — 400mm (D) x 380 (W)
· Designed for ponds up to 6500 gallons (30,000 litres)
· Supplied complete with wash pump.
Size | Price | |
Superdrum Combi Bio 30 | £2950.00 |
Superdrum Combi Bio 30
Compact size but with a super performance, the Superdrum Combi Bio 30 filter will handle flows of up to 4400 gallons per hr (20 cu m per hr)

Oase Proficlear Premium Compact L EGC
The Oase Combination filter type 1 is a marriage of 1 x Profidrum and a Moving bed biofilter module complete with 60 litres of helix media.
Specification. Oase Proficlear Premium Compact-L EGC
Width in mm 891
length in mm 1370
Height in mm 815
Power consumption in Watts 5
Power consumption cleaning in Watts 1050
Cable length in m 5.00 + 5.00
Net weight in kg 102kg
Guarantee 2 + 1 years
Control unit Microcontroller
Temperature indicator Yes
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
Basket width in mm 370
Number of sieve elements (unit) 8
Filter intake surface in cm² 4200
Material GRP thermoset/stainless steel
Biological filter surface 57.3 sq. m
Number of inlets 3 (Gravity), 2 (Pumped)
Number of outlets 2
Connections, inlet DN110 (gravity) 50mm (Pumped)
Connections, outlet DN150 (gravity) 110mm (Pumped)
Connections, sludge discharge N 75, DN 110
Max Flow rate, 25,000 lph (Gravity) 20,000 lph (Pumped)
Installation height over water level in cm 13 (Gravity)
Installation height over water level in cm 37.5 (Pumped)
Possible water-level difference in cm 10
60 litres helix bio media
Size | Price | |
Oase Compact L EGC combination filter Pumped | £4199.00 | |
Oase Compact L EGC combination filter Gravity | £4199.00 |
Oase Compact L EGC combination filter
Compact size but with huge performance, the Oase Combination filter EGC L will handle flows of up to 5500 gallons per hr (25 cu m per hr) and is complete with 60 litres of Helix bio media.
Above: Oase compact L EGC combination filter
Oase Premium DF-L Moving Bed Module
The Oase Premium DF-L moving bed modules are designed to be fitted after the Oase Profi Drum Premium DF-L filter, but can also be used with many types of suitable drum or pre-filter. They are designed also to be daisy chained together so that one, two or more modules can be fitted together in-line to complete a filter system to cope with all sizes of ponds The module offers ultra efficient biological filtration, as the modules are supplied with 50 litres of Helix 15 bio media and are comfigured wth large airstones already in place and filter grids so that the units can be installed very quickly. They feature 6" (150mm) inlet and outlets complete with rubber fittings ready for connection and by using rubber reducers the final outlets can be simply be reduced to 2" or 1.5" ready for connection to filter pumps. Dimensions 83cm x 60cm wide x 82cm high, weight 44kg
Size | Price | |
Oase Premium DF-L Moving Bed module | £924.99.00 |
Oase Premium DF-L Moving Bed module


Oase Premium XL Moving Bed Module
The Oase Premium XL moving bed modules are designed to be fitted after the Oase Profi Drum Premium XL filter, but can also be used with many types of suitable drum or pre-filter. They are designed also to be daisy chained together so that one, two or more modules can be fitted together in-line to complete a filter system to cope with all sizes of ponds The module offers ultra efficient biological filtration, as the modules are supplied with 100 litres of Helix 15 bio media and are comfigured wth large airstones already in place and filter grids so that the units can be installed very quickly. They feature 6" (150mm) inlet and outlets complete with rubber fittings ready for connection and by using rubber reducers the final outlets can be simply be reduced to 2" or 1.5" ready for connection to filter pumps. Dimensions 133cm x 87.5cm wide x 82cm high, weight 101kg
Size | Price | |
Oase Moving Bed module | £1749.00 |
Oase Premium XL Moving Bed module

The Combi Bio range
The Combi Bio range of combination filters provide the perfect filtration solution for all ponds from the smallest, up to mega ponds of 66,000 gallons (300,000 litres)or more. With three models in the range, all featuring the latest electronic and automated control, direct drive motors, internal pre-fitted high pressure wash pumps and massive biological capacity, these filters are among the very best of breed. They are very well built, rugged and reliable and provide near perfect water quality.

Above: Drum chamber for Combi Bio range.

Above: Internal wash pump and air diffuser for Combi Bio range.

Above: Controller for Combi Bio range.
Combi Bio 50
The Combi Bio 50 Features:-
The Combi Bio 50 offers ultra efficient mechanical filtration, combined with super efficient biological filtration, all in one compact unit.
· Built to a very high standard, the filter features the following;
· Flow rate of 6600 gallons per hour
· 3 x 110mm inlets and 2 x 110mm outlet
· Dry run protection
· Fully automatic control panel.
· 60 micron screen.
· 5.5 bar internal cleaning pump
· Direct drive
· Filter can still be run if the motor fails
· 320 litres capacity of bio media (not supplied)
· Full 2 year warranty ( exc. screen)
· Dimensions— External ; 1940mm x 685mm x 947mm ( LxWxH )
· Drum Size—420mm (D) x 415 (W)
· Max water level height - 825mm
Size | Price | |
Combi Bio 50 | £4145.00 |
Combi Bio 50
Compact size but with huge performance, the Combi Bio 50 filter will handle flows of up to 6600 gallons per hr (30 cu m per hr).

Combi Bio 100
The Combi Bio 100 offers ultra efficient mechanical filtration, combined with super efficient biological filtration, all in one compact unit.
· Built to a very high standard, the filter features the following;
· Flow rate of 11000 gallons per hour
· 4 x 110mm inlets and 2 x 110mm outlet
· Dry run protection
· Fully automatic control panel.
· 60 micron screen with Blanketweed and debris trap on drum.
· 5.5 bar internal cleaning pump
· Filter can still be run if the motor fails
· 420 capacity bio chamber (media not supplied)
· Full 2 year warranty ( exc. screen)
· Dimensions— External ; 1940mm x 836mm x 973mm ( LxWxH )
· Drum Size—650mm (D) x 415 (W)
· Max water level height - 805mm
· Installation height is 14.5cm below water level of the pond
Size | Price | |
Combi Bio 100 | £5145.00 |
Combi Bio 100
Still compact size but with even more capability, the Combi Bio 100 filter will handle flows of up to 11000 gallons per hr (50 cu m per hr).

Above: Combio Bio 100 insalled as a pumped system
Combi Bio 200
The Combi Bio 200 offers ultra efficient mechanical filtration, combined with super efficient biological filtration, all in one compact unit.
· Built to a very high standard, the filter features the following;
· Flow rate of 20000 gallons per hour
· 8 x 110mm inlets and 4 x 110mm outlet
· Dry run protection
· Fully automatic control panel.
· 60 micron screen with Blanketweed and debris trap on drum.
· 5.5 bar internal cleaning pump
· Filter can still be run if the motor fails
· 420 litre max capacity bio chamber (media not supplied)
· Full 2 year warranty ( exc. screen)
· Dimensions— External ; 2380mm x 836mm x 973mm ( LxWxH )
· Drum Size—650mm (D) x 800 (W)
· Max water level height - 805mm
· Installation height is 14cm below water level of the pond
Size | Price | |
Combi Bio 200 | £6895.00 |
Combi Bio 200
A much larger filter but with massive performance, the Combi Bio 200 filter will handle flows of up to 20000 gallons per hr (100 cu m per hr).

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 flexiblity to the installation point.
Product | Price | |
Float Switch | £39.95 |

