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 25th October 2023
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Which Pump and what are the running Costs?
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 | £244.99 | |
8500 | 1,828 | 80 | 3.2 | £289.99 | |
11500 | 2,422 | 100 | 3.3 | £319.99 | |
14500 | 2,995 | 135 | 3.4 | £369.99 | |
17500 | 3,800 | 170 | 3.7 | £414.99 |
Oase Aquamax Classic Variable speed water Pumps
The all new Aqiuamax Classic controllable pump range from Oase features state-of-the-art technology - the variable speed entry-level series of filter and watercourse pumps. The Classic controllable comes in three energy-efficient sizes with integrated controller for convenient external control. Simply download the Oase App and you can control everything from your phone via Bluetooth and WiFi as well as from the remote control module. Uncompromisingly reliable, the Classic Controllable pumps pond water and coarse debris particles, up to 8 mm in size. As with the standard AquaMax Classic , the Controllable is extremely economical thanks to its energy-efficient motor, constantly saves electricity, and therefore money while in operation due to the variable speed control.
Product characteristics at a glance
- Smart control with the new Oase app via Bluetooth or WiFi
- Lots of power when needed - Head up to 5.3m
- Extremely economical thanks to brilliant design and variable speeds
- Handles up to 8mm solids
- Features 1.5 inch inlets and 2 inch outlets
- Power consumption as low as 23 watts to 175 watt max (18000 model)
- Can be installed wet or dry
- Supplied with 12m cable
- Environmental Function Control (EFC by OASE) protects against dry-run or blocking
- The usual Five year warranty from Oase
Model | Max Flow (gph) | Wattage | Max Head (metres) | Price | |
9000 | 1,940 | 23-90 | 4.4 | £344.99 | |
12000 | 2640 | 26-120 | 5.0 | £414.99 | |
18000 | 3875 | 33-175 | 5.35 | £499.99 |

Oase Aquamax Eco Premium
The brand new Aquamax Eco Premium range are the latest from Oase. The pumps have even lower running costs than the Aquamax range of pumps they replace and are very reliable. They feature 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 most Koi pond filtration applications when we would expect to mount pumps either dry or submersible, in the pond. They are also suitable in the larger sizes (12,000, 16,000 and 20,000) for trickle towers and other water features.
Product characteristics at a glance
- Brilliant power balance: Trusted displacement capacities using 20% less energy
- Supplemental, patented connection of optional filter accessories for dirt feeding of further pond zones
- Unique, patented frost protection: to -20°C
- Delivery rate is controllable mechanically and electronically
- Elegant design with craftily operating elements
- Quiet when used as a dry installation
- Coarse pollutant displacement of particles up to 11 mm in size
- 5% larger cage filter surface area than previous models
- “Environmental Function Control” (EFC by OASE) protects against dry-run or blocking
Model | Max Flow (gph) | Wattage | Max Head (metres) | Price | |
4000 | 880 | 40 | 2.2 | £309.99 | |
6000 | 1,320 | 50 | 3.6 | £354.99 | |
8000 | 1,650 | 65 | 4.0 | £489.99 | |
10000 | 2,200 | 88 | 4.7 | £544.99 | |
12000 | 2,970 | 110 | 5.0 | £604.99 | |
16000 | 3,520 | 145 | 5.2 | £669.99 | |
20000 | 4,295 | 180 | 5.4 | £839.99 |
Oase Aquamax Eco Twin
The brand new Aquamax Eco Twin range are the largest in the premium range. The pumps are fully adjustable for flow and therefore power consumption as they feature twin pumps and remote control. They feature 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 when we would expect to mount pumps in the pond and larger water features such as waterfalls.
Product characteristics at a glance
- Particularly powerful filter pump with individually adjustable flow rate of the 2 motors via a remote control
- Reduced power consumption and effective adaptation of power to filter activity
- Minimal maintenance requirements thanks to large wrap around strainer
- Patented damper mechanism guarantees optimal delivery rates
- Coarse debris displacement of particles up to 11 mm in size>/li>
- In addition to pond floor filtration, simultaneous connection of a satellite filter or skimmer is also possible
- Unique, patented frost protection: Consequently, the pump will not be damaged at temperatures as low as -20°C
- Environmental Function Control« (EFC by OASE) protects against dry run and blocking
Model | Max Flow (gph) | Wattage | Max Head (metres) | Price | |
20000 | 4,400 | 20-198 | 4.5 | £1069.99 | |
30000 | 6,600 | 20-320 | 5.2 | £1259.99 |
Below - Aquamax Eco Twin | Below - Cutaway of Eco Twin | Below - Remote control for Eco Twin |
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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 | |
21000 | 4,625 | 40-350 | 8.0 | £1229.99 | |
26000 | 5,725 | 60-440 | 8.5 | £1359.99 | |
36000 | 6,600 | 650 | 8.5 | £1779.99 | |
44000 | 8,800 | 1100 | 10 | £2059.99 |
Below - Aquamax Expert | Below - Showing DMX-RDM control connections | Below - With DMX-RDM controller |
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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 | £224.99 |

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 | £959.99 | |
51000 | 10,570 | 70-320 | 4.0 | £1779.99 | |
81000 | 18,000 | 100-520 | 5.0 | £2519.99 |
Below - Aquamax Eco Titanium | Below - Showing DMX-RDM control connections | Below - With DMX-RDM controller |
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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 | £519.99 |
Below - FM-Master EGC Cloud | Below - Control from Iphone | Below - Control from Iphone |
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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 | |
40000 | 8,800 | 20-370 | 5.5 | £1795.00 | |
70000 | 15,400 | 30-750 | 7.0 | £1945.00 | |
50000 | 12,000 | 30-150 | 14.0 | £2199.99 | |
105000 | 23,000 | 30-800 | 2.5 | £2220.00 | |
Download manual | |||||
Download specification/dimensions |
Below - Flow friend Junior | Below - Flow friend HP | Below - Flow friend Pro |
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Oase Pondtec Pondomax Eco
The Pondtec Pondomax Eco range are made by Oase and are another 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 (14,000 and 17,000) 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
- 10 metres cable
- 3 year guarantee
- Large filter cage
- Thermal cutout and dry run protection
- Coarse pollutant displacement of particles up to 8 mm in size
- Can be used in wet or dry installations.
Model | Max Flow (gph) | Wattage | Max Head (metres) | Price | |
5000 | 1,110 | 60 | 2.6 | £139.99 | |
8000 | 1,760 | 70 | 2.8 | £154.99 | |
11000 | 2,640 | 95 | 3.0 | £174.99 | |
14000 | 2,950 | 140 | 3.2 | £184.99 | |
17000 | 3,700 | 170 | 3.4 | £209.99 |

Oase Pondtec Pondomax Eco Variable speed pumps
The new Pondtec Pondomax Control range are made by Oase and are another 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 (11,500 and 17,500) 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
- 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
- Can be used in wet or dry installations.
Model | Max Flow (gph) | Max Watts | Max Head (metres) | Price | |
8500 | 1,870 | 70 | 2.8 | £209.99 | |
11500 | 2,530 | 95 | 3.0 | £234.99 | |
17500 | 3,850 | 170 | 3.4 | £274.99 |

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 | £199.95 | |
20000 | 4,400 | 190 | 5.5 | £264.95 | |
30000 | 6,600 | 450 | 5.5 | £404.95 |

Oase Promax Cleardrain
The brand new Promax Cleardrain range from Oase range are all new clean water sump pumps. These are designed for emptying ponds and large tanks and will remove water right down to a depth of 1mm - yes 1mm! Up to 12 meters head pumping power.
Product characteristics at a glance
- 3 Models in the range, 7000/11000/14000 lph
- Adjustable bases to allow suction down to 1mm water depth
- Robust stainless steel housing
- Top Outlet
- Very compact foot print less than 20cm x 20cm
- Effective motor cooling during flat suction
- Particle size up to 5mm
- Adjustable handle with easy attachment to float switch
- 7000 model float switch, 11000/14000 adjustable water level sensor
Model | Max Flow (lph) | Wattage | Max Head (metres) | Price | |
7000 | 7000 | 400 | 7 | £114.99 | |
11000 | 11000 | 650 | 8 | £169.99 | |
14000 | 14000 | 1000 | 12 | £214.99 |

Oase Promax Mud Drain
The brand new Promax Mud Drain range from Oase range are all new dirty water sump pumps with fantastic price/performance characteristics. These are designed for emptying dirty water areas such as natural as well as Koi ponds and can pump dirty sludge with a particle size up to 30 - 40mm !
Product characteristics at a glance
- 5 Models in the range, 7000/11000/14000/20000 and 25000 lph
- 1.5 inch side outlet (2 inches for 20,000 and 25000 models)
- Robust stainless steel housing
- Solids handling 30mm 7,11 and 14000 models
- Solids handling 40mm for 20 and 25000 models
- Vortex stainless steel impellor on larger models
- Cast iron impellor housing
- Adjustable handle with easy attachment to float switch
Model | Max Flow (lph) | Wattage | Max Head (metres) | Price | |
7000 | 7000 | 550 | 5 | £124.99 | |
11000 | 11000 | 650 | 7 | £169.99 | |
14000 | 14000 | 1000 | 11 | £204.99 | |
20000 | 20000 | 1100 | 11 | £299.99 | |
25000 | 25000 | 1100 | 11 | £334.99 | |
30000 | 30000 | 1200 | 12 | £389.99 |
