Top quality hand selected
Japanese Koi Carp at sensible prices

Dormer Cottage, Spurgrove Lane, Little Frieth,

Nr. Henley on Thames, Bucks, RG9 6NU

Phone/Fax: 01494 882600

Order Hotline: 07814 011357

Pond Pumps, DC and AC Pumps, Submersible Pumps, Dry pumps, Dirty water Pumps

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 a wide variety of Pond and water pumps.

 

last updated 6th July 2025

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Which Pump and what are the running Costs?

 

Evolution Aqua Varipumps

 

Varipump by Evolution Aqua is a controllable pond pump, suitable for all sizes of ponds, to the very largest. Output and energy consumption can be controlled at the push of a button and the six pole, three phase motor is quiet and reliable. Available in three sizes, Varipump is powerful enough to run the largest of ponds and filters, and in the most demanding of situations. Varipump are suitable for use as submersible as well as dry mounting. Hosetail fittings included. Two year 2 year warranty on all models.

 

 Product characteristics at a glance

 

  • Very low electricity consumption with all models - 2,200 gph for 75watts!
  • Separate control module
  • 2 year standard guarantee
  • Six pole three phase motors
  • 1.5" and 2" inlet/outlests depending on model.
  • Variable speed for total control.

 

 

Model Max Flow (gph) Wattage Max Head (metres) Price
10000 2,200 75 3.1 £204.95
20000 4,400 190 5.5 £274.95
30000 6,600 450 5.5 £414.95
EA Variapump

 

 

 

 

Oase Pondtec Pondomax Eco Control pumps

 

The new Pondtec Pondomax Control range are made by Oase and are a super Eco friendly pond pump range.  These are an excellent quality pump and outstanding value for money and a great choice for most Koi pond filtration applications where we would expect the pump to be running continuously and can be either wet (submersed) or dry mounted. They are also suitable in the larger sizes (15,000 and 20,000) for trickle towers and other water features. They feature 1.5" female threaded inlet and outlet connections with stepped hosetails and are supplied with 10 metres cable and a 3 year guarantee.

 

 Product characteristics at a glance

 

  • Very low electricity consumption with all models
  • Made by Oase in Germany
  • Variable speed controller included
  • Controller shows power in watts or performance in % of flow
  • Easy Regulation 7-stage power adjustment and error indication
  • 10 metres cable
  • 3 year standard guarantee
  • Large filter cage for submersible use
  • Thermal cutout and dry run protection
  • Coarse pollutant displacement of particles up to 8 mm in size
  • Safely protected against dry running and blockage
  • Can be used in wet or dry installations.

 

 

Model Max Flow (gph) Max Watts Max Head (metres) Price
5,000 1,100 55 4 £180.95
10,000 2,200 90 5.5 £219.95
15,000 3,300 125 6.5 £259.95
20,000 4,400 190 7.5 £297.95
Pondtec control Pump

 

 

Oase Aquamax Classic Submersible Pumps

 

The Aquamax Eco Classic range are more powerful, even more efficient and therefore even more frugal in terms of running costs than the Aquamax range they replace, now using a third less power.  They are now recommended for submersible and dry use . Now manufactured with a completely frost proof casing. Supplied with 10 metres cable and 3 year guarantee. (can be extended to 5 year) Without doubt Oase produce THE best submersible pump range available today - and ALL and very reliable.  Ideal for main filter pumps and skimmers - only suitable for venturis or waterfalls in larger sizes. All models are now supplied complete with frost proof impellor housing so where applicable can be left in pond all winter. This pump range has been developed with low running costs in mind and are now even lower wattage than before - 8000 litres per hour for 80 watts.

 

 

Model Max Flow (gph) Wattage Max Head (metres) Price
5500 1,167 60 2.8 £219.99
8500 1,828 80 3.2 £259.99
11500 2,422 100 3.3 £304.99
14500 2,995 135 3.4 £354.99
17500 3,800 170 3.7 £389.99

 

 

Blue Eco 350

 

Blue Eco are back! One of the all time most powerful and most econmical pumps is now available again after an absence of 3 years, and in a new even better form.

 

The Blue Eco, Europe's most popular pond pump, has been updated and is more powerful than ever. The updated Blue Eco 350 offers maximum performance and flexibility for (koi) ponds, swimming ponds, aquaculture and waterfalls. This high-quality Blue Eco 350 pump is equipped with an updated powerful controller, which allows you to easily regulate the pump's capacity and save up to 50% on energy costs. The pump can handle up to 25m³/h with a maximum head of 8 meters. Like its predecessor, the Blue Eco 350 is suitable for both wet and dry installation. The pump can be placed completely under water or installed dry below the water level. Thanks to the advanced controller with a 0-10 volt connection, you can easily adjust the capacity, duration and external control. In addition, dry-running protection and fault messages ensure optimal safety and reliability. The pump can be fully integrated into automated systems, making it ideal for professional applications. Why choose the Blue Eco 350?

 

  • Energy efficient - Save up to 50% on energy costs and earn back the cost of the pump within a year.
  • Versatile applications - Suitable for ponds, swimming ponds, bio-pools, aquaculture, streams and waterfalls.
  • 100% seawater resistant - Ideal for both fresh and salt water applications.
  • Intelligent and safe control - Timer functions, dry-run protection and fault messages via the display.
  • Full control and integration - External control via a 0-10 volt connection, allowing seamless integration into automated systems.
  • Ideal for professional use - reliable performance and extensive control options for maximum efficiency.
  • Proven quality - many owners already trust the Blue Eco series

 

 Product characteristics at a glance

 

Technical details:

  • Suction connection: 2½" external thread.
  • Pump outlet connections: 50 mm (internal) / 63 mm (external)
  • Capacity: 25 m³/h
  • Maximum delivery height: 8 meters
  • Pump size: 22x14x16 cm
  • Controller size: 26x16,5x10 cm
  • Supplied with 10m of signal cable
  • Suitable for wet or dry installations
  • Weight 6kg
  • Two year warranty

 

 

Model Max Flow (gph) Wattage Max Head (metres) Price
350 5,500 20-350 8 £1255.00

 

 

Below - Blue Eco pump and controller Below - Blue eco side elevation Below - Remote controller for Blue Eco
Blue Eco Blue Eco Blue Eco

 

 

Oase Aquamax Eco Premium

 

AquaMax Eco Premium is the latest generation of the tried and tested OASE AquaMax pond pumps. It impresses with exceptional energy efficiency and outstanding flow rate. Six models with different delivery heads cover pumping capacities from 3.5 to 6 m water column. Compared to its predecessor, the AquaMax Eco Premium is more economical, quieter and even more efficient. It is equipped with the OASE Control interface for digital monitoring and control of the pump, with OASE Environmental Function Control to prevent dry running and blockage and with the Seasonal Flow Control for seasonal temperature-controlled filter flow rates. It also has a second input for a satellite filter or skimmer and is frost-proof down to –20°C. The OASE Eco Control (IP48) external accessory unit enables smart bi-directional pump control in year-round operation.

 

 Product characteristics at a glance

 

  • MORE EFFICIENT: Improved efficiency for all six AquaMax Eco Premium 5000–21000 models
  • MORE ECONOMICAL: Lower power consumption all year round thanks to the increased energy efficiency of the motors
  • QUIETER: Garden water features are more peaceful thanks to the now even quieter AquaMax Eco Premium pumps
  • STOPS IN TIME: Reliable protection against blockages and dry running thanks to the built-in OASE Environmental Function Control
  • SMART: OASE Control interface for digital monitoring and regulation of the pump.
  • REQUIREMENTS-BASED: Seasonal Flow Control – now available on all models – ensures greater efficiency by through temperature-adjusted flow rates
  • LOW TEMPERATURE-RESISTANT: Frost-proof down to -20°C
  • APP-COMPATIBLE: Simply download the OASE Control app (from the App Store or via Play Store) and you're ready to go
  • VERSATILE: You can place this pump in dry conditions or submerged underwater
  • LARGE SOLIDS HANDLING: Reliable conveying of plant parts or fish faeces up to a size of 11 mm

 

 

 

 

Model Max Flow (lph) Wattage Max Head (metres) Price
5000 5000 10-35 4.5 £299.99
7000 7000 12-45 4 £349.99
9000 9000 14-60 4.5 £474.99
13000 13000 16-100 5 £599.99
17000 17000 18-140 5.5 £639.99
21000 21000 20-180 6 £719.99

 

 

Oase Aquamax Eco Expert

 

The next generation of powerhouses - energy-efficient for rigorous requirements. They feature massive pumping power, up to 8.5 meter head. These pumps can now be controlled via the remote DMX-RDM controller (see below). Features 2" female threaded inlet and outlet connections and supplied with 10 metres cable and a standard 3 year guarantee which can be extended to 5 years. These are the ideal pump choice for larger Koi pond filtration applications and larger water features such as waterfalls and watercourses.

 

 Product characteristics at a glance

 

  • New, energy-efficient pump generation for extremely powerful and economic delivery capacity
  • Perfect for use in demanding filter systems or for large watercourses and waterfalls
  • Excellent efficiency and at the same time outstanding displacement of coarse debris down to 11 mm in size
  • Robust and durable stainless steel housing for stability
  • Unique, patented frost protection: Consequently, the pump will not be damaged at temperatures as low as -20°C
  • Protection against dry run and blocking through Environmental Function Control (EFC by OASE)
  • Can be setup for submersible or dry installations.
  • The pump is unusually quiet in operation; ideal for use in a pump chamber
  • Patented Seasonal Flow Control« for intelligent and environmentally-conscious regulation of flow rate and delivery head
  • An additional 30% energy savings is possible with SFC switched on
  • MADE IN GERMANY: Precise and reliable German engineering art at a high level of quality

 

 

Model Max Flow (gph) Wattage Max Head (metres) Price
22000 4,625 40-350 8.0 £1339.99
28000 5,725 60-440 8.5 £1534.99
36000 6,600 650 8.5 £1854.99
44000 8,800 1100 10 £2119.99
Below - Aquamax Expert Below - Showing DMX-RDM control connections Below - With DMX-RDM controller
Aquamax Eco Expert Video

 

 

Oase Aquamax Eco Controller

 

Product features at a glance

  • Innovative controller for AquaMax Eco Expert pumps
  • For smart regulation and control
  • With illuminated two-line display for easy read-out
  • For year-round use, splash-proof IP 44
  • With 10 m DMX-RDM cable for bi-directional communication
  • With flexible fastening material for attachment directly on the pump, on a ground stake (included in the scope of delivery) and for wall installation
  • For dimming: SFC status change: Query of power consumption, rotational speed and total runtime of the connected pumps
  • A separate power supply is not required
    •  

       

Model Set up Type Wattage weight(kg) Price
DMX-RDM control Dry installation only less than 1 1.3 £175.99

 

 

 

 

Oase Garden Controller Cloud

 

The new Oase Garden Controller Cloud enables the control of up to 10 Oase EGC capable devices via smart phone or tablet using the Oase App. Thanks to the Oase cloud based network, the Oase Garden Controller Cloud makes it possible to monitor and control the connected EGC devices in real-time, from anywhere in the world, provided there is internet access. In the case of the Oase ProfiClear Premium Drum Filter range, the App will provide useful information such as pond temperature and cleaning cycle data, it is also possible to get active messages in the event of a malfunction or abnormalities, so the immediate appropriate action can be taken.

 

This clever device can be used to digitally control the flow rate of the Oase AquaMax Eco Expert and AquaMax Eco Titanium ranges of pumps. When used in conjunction with the new range of Oase Aquarius Eco Expert Fountain Pumps the EGC Cloud Controller even allows the selection of pre-programmed water display patterns to create dynamic fountain displays.

 

With an Integrated WLAN Antenna you can conveniently control your garden devices via smart phone or tablet at a range of up to 80m. The Controller comes complete with optional ground stake or wall fixing for flexible installation. The unit has a splash proof, IP68 waterproof rating allowing use of the Oase Garden Controller Cloud all year round, whatever the weather. The controller comes equipped with a 2m EGC cable and also includes an EGC End Resistor.

Product features at a glance

  • Innovative controller for networking the Oase EGC devices
  • Can be controlled via WiFi with tablet or smart phone (iOS or Android)
  • Simply download the app from the Apple Store or Google Play, connect EGC devices and get started
  • Bi-directional, intelligent communication solution between pumps, drum filters and illumination
  • Up to 10 EGC-capable Oase devices can be connected and controlled
  • All-season, outdoor use thanks to splash-proof housing
  • Flexible ground stake or wall installation options included in the scope of delivery
  • Globally accessible free-of-charge via the Oase Cloud
    •  

       

      The Oase Garden Controller Cloud is suitable for use with the following:

      • Oase ProfiLux Garden LED RGB Spotlights
      • Oase Aquarius Eco Expert 22000 - 44000
      • Oase AquaMax Eco Expert 21000 - 44000
      • Oase AquaMax Eco Titanium 30000 - 50000 - 80000
      • Oase BioTec Premium EGC
      • Oase Premium Drum Filters
Model weight(kg) Price
Cloud control 55317 1.3 £324.99

 

 

 

 

Oase Garden Controller Home

 

The Oase Garden Controller Home is an Innovative controller for networking the OASE EGC devices, controllable via WiFi using tablet, PC or smartphone (iOS or Android). Simply download the app, connect EGC devices and get started. Up to ten EGC-capable OASE end devices (pumps, filters, lights) can be connected, operated and controlled. Thanks to splash-proof housing, it can be used outdoors throughout the year.

 

WiFi connection technology lets you easily, conveniently and quickly read out and regulate the capacity information of your garden devices via smart phone or tablet. And you can do it with a range of up to 80 m (with unobstructed signal transmission). The flexible fastening material for fixing in the groud or for wall installationis including in the scope of delivery. The housing has an IP68 waterproof rating to a depth of 0.1m. All season outdoor use is possible.

 

The controller is equipped with a 2 m EGC cable and EGC connection. This controller is the interface to the EGC-capable Oase devices (pumps, filters, and illumination).

 

Product features at a glance

  • Innovative controller for networking the Oase EGC devices
  • Can be controlled via WiFi with tablet or smart phone (iOS or Android)
  • Simply download the app from the Apple Store or Google Play, connect EGC devices and get started
  • Bi-directional, intelligent communication solution between pumps, drum filters and illumination
  • Up to 10 EGC-capable Oase devices can be connected and controlled
  • All-season, outdoor use thanks to splash-proof housing
  • Flexible ground stake or wall installation options included in the scope of delivery
  • Globally accessible free-of-charge via the Oase Cloud
    •  

       

      The Oase Garden Controller Home is suitable for use with the following:

      • Oase ProfiLux Garden LED RGB Spotlights
      • Oase Aquarius Eco Expert 22000 - 44000
      • Oase AquaMax Eco Expert 21000 - 44000
      • Oase AquaMax Eco Titanium 30000 - 50000 - 80000
      • Oase BioTec Premium EGC
      • Oase Premium Drum Filters
Model weight(kg) Price
Control Home 1.3 £239.99

 

 

 

 

Oase Aquamax Eco Titanium

 

Perfect for large gravity-fed filter systems on Koi ponds. Massive pumping power, up to 48,000 litres per hour yet with extremely low current consumption. These pumps can now be controlled via wireless remote control from your Apple or Android mobile phone worldwide. Features 75mm female threaded inlet and 75mm outlet connections and supplied with 10 metres cable and a standard 3 year guarantee which can be extended to 5 years. These are the ideal pump choice for large and more sophisticated Koi pond filtration applications and larger water features such as waterfalls and watercourses.

 

 Product characteristics at a glance

 

  • Innovative gravity filter pump for large bodies of water with koi stock
  • With flow-optimised hydraulics achieves an outstanding level of efficiency of over 50%
  • Pumps up to 48000 l/h back into the pond non-stop.
  • With innovative AquaMax Eco Control for bi-directional control of the pump via 10 m DMX-RDM cable
  • Protection against dry run and blocking through Environmental Function Control (EFC by OASE)
  • Patented Seasonal Flow Control (SFC) for intelligent and environmentally-conscious regulation of flow rate and pump head
  • An additional 30% energy savings is possible with SFC switched on
  • Ideal for set-up in a pump chamber
  • Can be setup and installed wet or dry
  • Coarse debris displacement of particles to 6 mm in size
  • Robust pump housing of cast stainless steel with large pedestal for secure placement
  • Rotor shaft and bearings of high-quality SIC ceramics for optimal reliability and long service life
  • Made In Germany: precise and reliable German engineering art at a high level of quality

 

 

Model Max Flow (gph) Wattage Max Head (metres) Price
31000 6,605 35-170 3.3 £979.99
51000 10,570 70-320 4.0 £1819.99
81000 18,000 100-520 5.0 £2574.99

 

 

Below - Aquamax Eco Titanium Below - Showing DMX-RDM control connections Below - With DMX-RDM controller

 

 

Oase InScenio Master EGC Cloud

 

This smart controller from Oase allows the owner to remotely control and monitor a number of devices such as lights, pumps etc from a remote laptop, tablet, Apple or Android phone.

 

 Product characteristics at a glance

 

  • Innovative highlight of the OASE InScenio Power Management family, controllable via WLAN on tablets or Smartphones (iOS or android)
  • Simply download the app (from the Apple Store or via Google Play) and get started
  • With 4 power outlets: 3 can be switched on and off, 1 is dimmable in addition
  • Each power outlet can be controlled over 24 hours with integrated timer
  • With additional DMX-RDM connection for connecting to end devices that are garden system compatible
  • In addition, up to 10 remote-controlled OASE devices can be integrated and controlled via the app.
  • All-year round use with spray water resistant power outlets
  • Ground stake guarantees secure anchoring in the ground

 

 

Model Max total load Max total current Radio Range(433 MHz) WLAN range (2.4GHz) Price
InScenio Master EGC Cloud 3600 watts 16.0 amps 80 metres 80 metres £529.99

 

 

Below - FM-Master EGC Cloud Below - Control from Iphone Below - Control from Iphone
FM Master WLAN Video

 

 

Flow Friend Pumps

 

Flow friend pumps are now amongst the most powerful and yet most energy efficient pumps available today.

 

The motor speed (600-2,550 rpm) can be adjusted as standard with every type of FlowFriend. The pump includes a display for this purpose that also shows power consumption and hours of operation. Every FlowFriend can also be controlled externally via an optional 0-10V port. The major benefit of permanent magnet motors (DC motors) compared to frequency controlled asynchronous motors is the remarkably high effuciency at low rpm. However, even at higher rpm, these pumps are significantly more efficient.

 

Ingenious pump housings

 

A pump’s hydraulics consist of the pump’s rotor and the pump’s housing. The FlowFriend’s hydraulics are entirely made of cast 316 stainless steel. Robust, smooth and a perfect shape to keep internal flow losses to a minimum.

 

FlowFriend PRO.

 

This Axial-flow (impellor) pump has a low pump lift and large water volume. For exampe, at 0,5 MWC, a capacity of 50m3/h (11,000 gallons per hour) is acheivable at a power consumption of only 200 watts. The PRO can deal with signifcantly higher pressure than so-called 'air-lift' based systems, and the PRO is outstandingly flexible in use on account of its adjustability. Uses are mult-chamber, moving bed and drum filters. Plus the are popular in recirculation systems in fish farms.

 

Motor and seal.

 

The FlowFriend has a very high-quality Eagle Burgmann shaft seal. The motor is manufactured by one of Germany’s largest and most important producers of electrical motors. The motor’s efficiency, depending on the RPMs, is between 88 and 94%.

 

Product characteristics at a glance

 

  • extremely energy efficient - up to 94%
  • standard ow/rpm controls
  • optional 0-10V control.
  • Extremely quiet
  • A highly efficient new generation of permanent magnet (DC) motor
  • 3 different optimised pump housings, cast completely of stainless steel grade 316
  • variable flow on all models for optimal versatility
  • can be used anywhere in the world ranging from 100-240V/50-60Hz
  • Massive flow rates acheivable for very low energy consumption

 

 

Model Max Flow (gph) Wattage Max Head (metres) Price
Flow Friend Junior 8,800 20-370 5.5 £2290.00
Flow Friend 15,400 30-750 7.0 £2699.00
Flow Friend Pro 23,000 30-800 8 £2995.00
Download manual
Download specification/dimensions

 

 

Below - Flow friend Junior Below - Flow friend HP Below - Flow friend Pro
Flow Friend junior Flow Friend HP Flow Friend pro

 

 

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