Unplug the pump, then take it out of the tank. Open the cover: it folds upwards on the 300, 600 and 1000, and it comes free of its side screws on the larger models. Remove the impeller from the motor housing. Rinse all the parts under running water, without any hard object or harsh product. Reassemble the pump in the reverse order.

Compact grey and black pump with a flow adjustment dial and suction cups, front view

Small compactON 300 pump with suction strainer and suction cups, three-quarter view

compactON 1000 pump with suction strainer and vertical outlet, three-quarter view

Large black compactON 2100 pump with inlet fitting and vertical outlet, on its suction cups

Eheim compactON 600 water pump in its packaging

Eheim compactON 3000 water pump in its packaging

Eheim compactON 5000 water pump in its packaging

EHEIM compactON 12000 water pump in black, 25 mm vertical outlet, on its suction cups

Packaging of the EHEIM compactON 12000 pump with the pump pictured

Accessories supplied with the compactON 12000: strainer, fittings, plate and suction cups

EHEIM compactON submersible water pump, 170 to 12,000 L/h

Name: EHEIM compactON submersible water pump, 170 to 12,000 L/h
Brand: EHEIM
SKU: H1020220
Availability: InStock

¥3,600

¥1,200 × 3 with no fees Klarna.

This submersible pump circulates the water in an aquarium or an indoor aquaponics system, and its flow rate is adjustable on the pump, from 170 to 3,000 L/h depending on the model. The compactON 5000 and 12000 deliver 5,000 and 12,000 L/h at a fixed flow rate.

Ref. H1020220·Pumps

Modèle : 300, 170 à 300 l/h

300, 170 à 300 L/h

600, 250 à 600 L/h

1000, 400 à 1 000 L/h

2100, 1 400 à 2 100 L/h

3000, 1 800 à 3 000 L/h

5000, 5 000 L/h

12000, 12 000 L/h

Customer support 7 days a week by email

Delivery within 2 to 15 business days

100 % secure payment

The summary

What it is: an indoor submersible water pump with flow adjustable on the pump itself, for aquariums and aquaponic systems.
The seven models: from 300 to 12,000 L/h maximum, and from 7 to 110 W.
Height decides: the maximum head height ranges from 0.60 to 4.20 m depending on the model, and the flow drops as the height to be cleared increases.
How to choose: the height between the fish water and the outlet into the grow bed points to the right model.
The right pipe: 12/16 mm on the 300 and 600, 16/22 or 19/27 mm on the 1000, 19/27 mm on the 2100 and 3000, 25/34 mm on the 5000 and 12000.
How it arrives: in a parcel delivered to your door, with its suction cups, strainer and fitting.

Indoor submersible pump with adjustable flow, for aquarium and aquaponics

This submersible water pump attaches to the bottom of an aquarium or tank with its suction cups, and pushes water through a pipe to a filter, a grow bed or an indoor fountain. It comes in seven models, from the compactON 300 to the 12000, with a maximum flow rate ranging from 300 to 12,000 litres per hour. All of them work in freshwater and in seawater, and the flow can be adjusted on the pump itself, except on the 5000 and 12000. This lets you match it to the volume of your tank and the height the water has to climb.

⚙️ Adjusting the flow rate

On the 300, 600 and 1000 models, you adjust the flow by turning the regulator on the pump cover, or the intake strainer that attaches to it. The compactON 2100 and 3000, for their part, have a power regulator built into their cover. The flow of each adjustable model can thus be reduced down to a minimum, 170 L/h for the 300, 250 L/h for the 600, 400 L/h for the 1000, 1,400 L/h for the 2100 and 1,800 L/h for the 3000, enough to calm the current for small fish or to fill a grow bed without making it overflow. The 5000 and 12000 run at a fixed flow, for large volumes. The motor is enclosed in a watertight IP68 double-insulated housing, designed to stay submerged down to a depth of 1 m.

📏 Flow rate and delivery head

A pump's maximum flow is measured when the water comes out at pump level. As soon as the pipe rises, the flow drops, and it falls to zero at the maximum head height: 0.60 m for the compactON 300, 1 m for the 600, 1.40 m for the 1000, 2.40 m for the 2100, 2.70 m for the 3000, 3.60 m for the 5000 and 4.20 m for the 12000. The flow curve falls almost in a straight line, so the 1000 still keeps a little over half its flow when the water has to rise 60 cm. So choose a model whose maximum head is at least twice the height of your installation, to keep a useful flow once the pipe and its bends are taken into account.

compactON 300 and 600

From 170 to 600 L/h for 7 W, the water rises to 0.60 or 1 m, on a 12/16 mm pipe.

compactON 1000

The mid-range model covers 400 to 1,000 L/h for 15 W, up to 1.40 m, on a 16/22 or 19/27 mm pipe.

compactON 2100 and 3000

From 1,400 to 3,000 L/h for 38 or 55 W, up to 2.40 or 2.70 m, on a 19/27 mm pipe.

compactON 5000 and 12000

5,000 or 12,000 L/h at fixed flow for 70 or 110 W, the water rises to 3.60 or 4.20 m, on a 25/34 mm pipe.

The grey pipe matched to each outlet

Each compactON connects to a specific pipe diameter, and the JBL flexible pipe, 2.5 m is available in 12/16, 16/22 and 19/27 mm: 12/16 mm for the 300 and 600, 16/22 or 19/27 mm for the 1000 once its fitting has been trimmed, and 19/27 mm for the 2100 and 3000. Its translucent grey tint slows algae growth inside the pipe while still letting you see the water flowing. You can therefore order the pump and its link to the grow bed in one go, without hunting for a compatible diameter.

An indoor pump that never runs dry

The compactON is designed for indoor fishkeeping, in water that does not exceed 35 °C, and it must never run dry: keep an eye on the water level, which drops as water evaporates. Plug it into a socket protected by a residual current device (RCD) of 30 mA or less, and form a loop in the cable lower than the socket, so that any water running down the cable drips onto the floor. The cable cannot be replaced, so a damaged cable means you have to replace the pump.

🐟 Sizing the pump for aquaponics

In aquaponics, the pump lifts water from the fish tank to the grow bed, where bacteria convert the ammonia from the waste into nitrates that your plants take up, then the water flows back down by gravity. The usual guideline is to pass twice an hour the whole volume of the fish tank through the pump, then add about 30% margin to compensate for the length of the pipe and the bends. The head is measured between the water surface of the fish tank and the pipe outlet in the grow bed, and it is this, far more than the volume, that decides the model. The guide to building your aquaponic system also covers choosing the pump according to the height to be cleared.

Take a 150-litre aquarium topped with a bed of clay pebbles, whose water inlet sits 60 cm above the surface. Two turnovers per hour call for 300 L/h, or about 390 L/h with the safety margin. The compactON 1000 still delivers about 570 L/h at that height, which covers the need, and its regulator lets you reduce the flow if the bed fills too quickly. For a 500-litre tank and beds placed at 80 cm, the need reaches about 1,300 L/h: the 2100 only just covers it with about 1,400 L/h, whereas the 3000, which delivers about 2,100 at that height, keeps a real margin. For a 1,000-litre tank and beds at 1.20 m, about 2,600 L/h is required: the 5000 is the first model that is enough, with about 3,300 L/h at that height. Beyond that, for a large tank of 2,000 to 3,000 litres, the 12000 takes over.

🔌 Power consumption and maintenance

An aquaponics pump runs day and night, so its power rating weighs directly on your installation's electricity consumption. Choosing the smallest model that covers the calculated need is therefore the best setting, with the regulator then used to fine-tune the flow. The first sign that maintenance is due is a flow that weakens: the intake strainer or the regulator clog up before the pump impeller does, and rinsing them under running water restores their flow.

The pump comes with its suction cups, its intake strainer, a fitting for the delivery pipe and instructions written in French, among other languages. On the 1000, this fitting is stepped: you cut it down with a saw to the diameter of your pipe, 16/22 or 19/27 mm, before screwing it onto the pump. The 2100, 3000, 5000 and 12000 are also supplied with the parts that let you install them out of the water, placed beside the tank.

Technical specifications

The seven models

compactON 300: 170 to 300 L/h, 7 WMaximum height of 0.60 m
compactON 600: 250 to 600 L/h, 7 WMaximum height of 1 m
compactON 1000: 400 to 1,000 L/h, 15 WMaximum height of 1.40 m
compactON 2100: 1,400 to 2,100 L/h, 38 WMaximum height of 2.40 m
compactON 3000: 1,800 to 3,000 L/h, 55 WMaximum height of 2.70 m
compactON 5000 and 12000: 5,000 or 12,000 L/h, 70 or 110 WMaximum head of 3.60 or 4.20 m, fixed flow rate

Connection and cable

Pipe for the 300 and 600: 12/16 mm
Pipe for the 1000: 16/22 or 19/27 mmStepped fitting to be cut to size with a saw
Pipe for the 2100 and 3000: 19/27 mmCan be installed out of the water
Pipe for the 5000 and 12000: 25/34 mmCan be installed out of the water
Flow rate adjustment: Regulator on the lidExcept on the 5000 and 12000, which have a fixed flow rate
Cable: Around 2 mNon-replaceable

Installation and dimensions

Water and immersion: Freshwater or marine, 35 °C at mostSubmersion to 1 m at most, IP68 watertight body
Where to use it: Indoors, aquarium or tankFor an outdoor pond, a pond pump
Dimensions of the 300 and 600: 72 x 38 x 62 mmHeight, width and depth
Dimensions of the 1000: 79 x 47 x 73 mm
Dimensions of the 2100 and 3000: 142 × 70 × 109 mm
Dimensions of the 5000: 154 × 92 × 142 mm
12000 dimensions: 185 × 110 × 175 mm
Warranty: 3 years

To budget for separately

Delivery pipe: Flexible grey pipe, 2.5 mTo the diameter of the model's outlet
Electrical protection: 30 mA residual current

14 further specifications are available in the detailed view.

In the box

1 compactON pump in the model chosen, with its cable
The fixing suction cups
1 intake strainer
1 fitting for the delivery pipe
1 multilingual instruction leaflet, French included
The mounting parts out of the water, with the 2100, 3000, 5000 and 12000

Flow rates, heads, power ratings, fittings, cables and dimensions recorded from 08 to 11/10/2026 from the manufacturer's data sheets, instructions and compactON leaflet. Flow rates at a given head estimated from its linear curve. The benchmark of two turnovers per hour and the 30% margin come from aquaponics sizing guides.

Which compactON for which height?

The seven models, from 300 to 12,000 L/h, separated by the volume to be circulated and the height the water has to clear.

Which of the seven compactON models? The volume of the tank, the height to be cleared and the future of your setup are enough to choose between the seven models.

	compactON 300Your choice	compactON 600Your choice	Recommended compactON 1000Your choice	compactON 2100Your choice	compactON 3000Your choice	compactON 5000Your choice	compactON 12000Your choice
Performance
Maximum flow rate (L/h)	300 L/h	600 L/h	1 000 L/h	2 100 L/h	3 000 L/h	5 000 L/h	12 000 L/h
Maximum height (m)	0,6 m	1 m	1,4 m	2,4 m	2,7 m	3,6 m	4,2 m
Power (W)	7 W	7 W	15 W	38 W	55 W	70 W	110 W
Pipe at the outlet	12/16 mm	12/16 mm	16/22 or 19/27 mm	19/27 mm	19/27 mm	25/34 mm	25/34 mm
Use
Adjustable flow	Yes	Yes	Yes	Yes	Yes	No	No
Can be installed out of the water	No	No	No	Yes	Yes	Yes	Yes
Price	¥3,600	¥5,300	¥6,900	¥15,000	¥19,600	¥32,600	¥47,600

compactON 300

Performance

Maximum flow rate (L/h)300 L/h

Maximum height (m)0,6 m

Power (W)7 W

Pipe at the outlet12/16 mm

Use

Adjustable flowYes

Can be installed out of the waterNo

compactON 600

Performance

Maximum flow rate (L/h)600 L/h

Maximum height (m)1 m

Power (W)7 W

Pipe at the outlet12/16 mm

Use

Adjustable flowYes

Can be installed out of the waterNo

compactON 1000Recommended

Performance

Maximum flow rate (L/h)1 000 L/h

Maximum height (m)1,4 m

Power (W)15 W

Pipe at the outlet16/22 or 19/27 mm

Use

Adjustable flowYes

Can be installed out of the waterNo

compactON 2100

Performance

Maximum flow rate (L/h)2 100 L/h

Maximum height (m)2,4 m

Power (W)38 W

Pipe at the outlet19/27 mm

Use

Adjustable flowYes

Can be installed out of the waterYes

compactON 3000

Performance

Maximum flow rate (L/h)3 000 L/h

Maximum height (m)2,7 m

Power (W)55 W

Pipe at the outlet19/27 mm

Use

Adjustable flowYes

Can be installed out of the waterYes

compactON 5000

Performance

Maximum flow rate (L/h)5 000 L/h

Maximum height (m)3,6 m

Power (W)70 W

Pipe at the outlet25/34 mm

Use

Adjustable flowNo

Can be installed out of the waterYes

compactON 12000

Performance

Maximum flow rate (L/h)12 000 L/h

Maximum height (m)4,2 m

Power (W)110 W

Pipe at the outlet25/34 mm

Use

Adjustable flowNo

Can be installed out of the waterYes

Flow rates, heads, power ratings and fittings: manufacturer's instructions and data sheets, recorded from 08 to 11/10/2026.

Documents & manuals

Instructions for the compactON 300, 600 and 1000

Suction cup mounting, flow adjustment, cleaning and troubleshooting. Instructions in German, French, English and Korean.

PDF · 8,7 Mo

Download

Instructions for the compactON 2100 and 3000

Installation in or out of the water, controller, maintenance and electrical safety. Multilingual instructions, French included.

PDF · 21,2 Mo

Download

Instructions for the compactON 5000 and 12000

Submersible or out-of-water installation, 25/34 mm fittings, maintenance and safety. Multilingual instructions, French included.

PDF · 23,9 Mo

Download

Estimate your
delivery time

The pump is dispatched within 48 hours with its accessories in a small parcel, and delivered to your home by Colissimo or Chronopost, as you choose during checkout. The exact amount is shown in your basket, based on the total weight of your order.

Frequently asked questions

8 questions

6 key questions, 8 in the detailed view

Which compactON should I choose for my setup?

The height to be cleared matters as much as the volume of the tank, and this table combines the two.

Your setup	Bare minimum	With some margin
Aquarium up to 60 L, outlet less than 20 cm above	300	600
Tank of 60 to 200 L, outlet up to 60 cm above	1000	2100
Tank of 200 to 600 L, outlet up to 1.20 m above	3000	5000

For a tank of 600 to 1,000 L, the 5000 is still suitable, with its maximum head of 3.60 m. For a large tank of 2,000 to 3,000 L, the 12000 delivers 12,000 L/h and lifts water up to 4.20 m. For a garden pond, you need to move up to a pond pump.

Which pipe should I fit to each model?

How much flow is left when the water has to go uphill?

Can it be installed in a garden pond?

Can it run out of the water?

How much does it consume in a year?

The compactON 300 and 600, at 7 W, use about 61 kWh per year.
The compactON 1000, at 15 W, uses about 131 kWh per year.
The compactON 2100, at 38 W, uses about 333 kWh per year.
The compactON 3000, at 55 W, uses about 482 kWh per year.
The compactON 5000, at 70 W, uses about 613 kWh per year.
The compactON 12000, at 110 W, uses about 964 kWh per year.

This calculation assumes continuous running, 24 hours a day, as in an aquaponics system.

How to maintain it?

What should I do if it suddenly stops?

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EHEIM compactON submersible water pump, 170 to 12,000 L/h

The summary