Oase OptiMax Return Pump

The OptiMax range of aquarium pumps meets the demands of modern aquaristics: designed for optimal water circulation and reliable displacement, these pumps deliver efficient, adjustable flow while remaining compact and easy to conceal. Quiet operation protects sensitive livestock and keeps living spaces peaceful, while low energy consumption reduces running costs. Built robustly for long service life, each pump features an individually adjustable water flow rate to suit your setup.

Flexible applications:

Water displacement for underwater use and, on larger units, optional dry installation
Suitable for both freshwater and saltwater aquariums

Top energy balance –low power consumption with strong pump performance

Multi-functional – ideal for efficient water circulation or for operating an aquarium filter
Adjustable – flow rate can be easily and variably regulated to match current needs
Reliable – designed for continuous use with smooth operation thanks to an optimised rotor design
Tough, quiet and durable
Practical – suction holders for secure local fastening
Robust and smooth – optimised rotor technology reduces vibration and extends lifespan
Flexible applications – suitable for marine and freshwater systems

Technical highlights

Compact housings for discrete placement, adjustable performance across the range, standard mains compatibility and long cable length for flexible installation. Designed with reliability and serviceability in mind, these pumps come with an extended guarantee for added peace of mind.
Suitable for underwater installation; selected models also support dry installation for external setups.
300Dimensions (L x W x H)55 x 42 x 60 mmRated voltage230 V / 50 Hz
Power consumption5 W
Power cable length 1,5 m
Net weight 0,13 kgGuarantee3 yearsMax. flow rate 300 l / hMax. head height 0,6 mPressure-side connection 13 mmSuction-side connection 13 mmSuitable for fresh water YesSuitable for saltwater YesSetup type Underwater installation only
500Dimensions (L x W x H)55 x 42 x 60 mm
Rated voltage230 V / 50 Hz
Power consumption5 W
Power cable length 1,5 m
Net weight 0,13 kgGuarantee3 yearsMax. flow rate 500 l / hMax. head height 0,8 mPressure-side connection 13 mmSuction-side connection 13 mmSuitable for fresh water YesSuitable for saltwater YesSetup type Underwater installation only800Dimensions (L x W x H)78 x 52 x 88 mm
Rated voltage230 V / 50 Hz
Power consumption7 W
Power cable length1,5 m
Guarantee3 years
Max. flow rate800 l /h
Max. head height1 m
Pressure-side connection17 mm
Suction-side connection17 mm
Suitable for fresh water YesSuitable for saltwater YesSetup type Can be setup underwater & dry installed
1000Dimensions (L x W x H)78 x 52 x 88 mm
Rated voltage230 V / 50 Hz
Power consumption 12W
Power cable length1,5 m
Guarantee3 years
Max. flow rate 1000 l /h
Max. head height1.3 m
Pressure-side connection17 mm
Suction-side connection17 mm
Suitable for fresh water YesSuitable for saltwater YesSetup type Can be setup underwater & dry installed
2000Dimensions (L x W x H)140 x 135 x 94 mm
Rated voltage230 V / 50 Hz
Power consumption 31.5W
Power cable length1,5 m
Guarantee3 years
Max. flow rate 2000 l /h
Max. head height2.4 m
Pressure-side connection17 mm
Suction-side connection17 mm
Suitable for fresh water YesSuitable for saltwater YesSetup type Can be setup underwater & dry installed
3000Dimensions (L x W x H)140 x 135 x 94 mm
Rated voltage230 V / 50 Hz
Power consumption 55W
Power cable length1,5 m
Guarantee3 years
Max. flow rate 2800 l /h
Max. head height3 m
Pressure-side connection17 mm
Suction-side connection17 mm
Suitable for fresh water YesSuitable for saltwater YesSetup type Can be setup underwater & dry installed
4000Dimensions (L x W x H)140 x 135 x 94 mm
Rated voltage230 V / 50 Hz
Power consumption 80W
Power cable length1,5 m
Guarantee3 years
Max. flow rate 4400 l /h
Max. head height3 m
Pressure-side connection17 mm
Suction-side connection17 mm
Suitable for fresh water YesSuitable for saltwater YesSetup type Can be setup underwater & dry installed
5000Dimensions (L x W x H)140 x 135 x 94 mm
Rated voltage230 V / 50 Hz
Power consumption 82W
Power cable length1,5 m
Guarantee3 years
Max. flow rate 5000 l /h
Max. head height3 m
Pressure-side connection17 mm
Suction-side connection17 mm
Suitable for fresh water YesSuitable for saltwater YesSetup type Can be setup underwater & dry installed