OASE OptiMax Water Pump – Ultra Silent (300 – 5000 L/Hr)

Description

Characteristic

POWERFUL & ECONOMICAL: Excellent energy balance: low power consumption with high pump output
INSTALLATION SITE: For installation under water, within the aquarium or in dry conditions
EASY TO MOUNT: Two practical suction holders for mounting at the desired location
MOVEMENT: Perfect for efficient water circulation or for the operation of an aquarium filter
ADJUSTABLE: The water flow rate can be easily and continuously adjusted
RELIABLE: Extremely powerful and reliable in continuous use

Technical Specifications,

Optimax 300

Dimensions (L x W x H) (mm) 55 x 42 x 60
Rated voltage 230 V / 50 Hz
Power consumption (w) 5
Power cable length (m) 1.50
Net weight (kg) 0.18
Guarantee (Years) 3
Max. flow rate (l/hr) 300
Max. head height (m) 0.60
Pressure-side connection (mm) 13
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Suitable for submersible use only

Optimax 500
Dimensions (L x W x H) (mm) 55 x 42 x 60
Rated voltage 230 V / 50 Hz
Power consumption (w) 5
Power cable length (m) 1.50
Net weight (kg) 0.18
Guarantee (Years) 3
Max. flow rate (l/hr) 500
Max. head height (m) 0.80
Pressure-side connection (mm) 13
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Suitable for submersible use only

Optimax 800
Dimensions (L x W x H) (mm) 77 x 52 x 80
Rated voltage 230 V / 50 Hz
Power consumption (w) 7
Power cable length (m) 1.50
Net weight (kg) 0.32
Guarantee (Years) 3
Max. flow rate (l/hr) 800
Max. head height (m) 1.0
Pressure-side connection (mm) 17
Suction Side Connection 19
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Can be set up underwater & dry installed

Optimax 1000
Dimensions (L x W x H) (mm) 77 x 52 x 80
Rated voltage 230 V / 50 Hz
Power consumption (w) 12
Power cable length (m) 1.50
Net weight (kg) 0.37
Guarantee (Years) 3
Max. flow rate (l/hr) 1000
Max. head height (m) 1.30
Pressure-side connection (mm) 17
Suction Side Connection 19
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Can be set up underwater & dry installed

Optimax 2000
Dimensions (L x W x H) (mm) 140 x 95 x 136
Rated voltage 230 V / 50 Hz
Power consumption (w) 32
Power cable length (m) 1.50
Net weight (kg) 1.01
Guarantee (Years) 3
Max. flow rate (l/hr) 2000
Max. head height (m) 2.40
Pressure-side connection (mm) 17
Suction Side Connection 17
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Can be set up underwater & dry installed

Optimax 3000
Dimensions (L x W x H) (mm) 140 x 95 x 136
Rated voltage 230 V / 50 Hz
Power consumption (w) 55
Power cable length (m) 1.50
Net weight (kg) 1.23
Guarantee (Years) 3
Max. flow rate (l/hr) 2800
Max. head height (m) 3.00
Pressure-side connection (mm) 17
Suction Side Connection 17
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Can be set up underwater & dry installed

Optimax 4000
Dimensions (L x W x H) (mm) 140 x 95 x 136
Rated voltage 230 V / 50 Hz
Power consumption (w) 80
Power cable length (m) 1.50
Net weight (kg) 1.22
Guarantee (Years) 3
Max. flow rate (l/hr) 4400
Max. head height (m) 3.00
Pressure-side connection (mm) 17
Suction Side Connection 17
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Can be set up underwater & dry installed

Optimax 5000
Dimensions (L x W x H) (mm) 140 x 95 x 136
Rated voltage 230 V / 50 Hz
Power consumption (w) 82
Power cable length (m) 1.50
Net weight (kg) 1.22
Guarantee (Years) 3
Max. flow rate (l/hr) 5000
Max. head height (m) 3.00
Pressure-side connection (mm) 17
Suction Side Connection 17
Suitable for freshwater Yes
Suitable for saltwater Yes
Setup type Can be set up underwater & dry installed

OASE OptiMax Ultra Silent Water Pump for SG Tanks

The OptiMax range covers a wide span of flow rates, from gentle 300 L/Hr movement up to a strong 5000 L/Hr, with an adjustable output and the option to run submerged or dry. For Singapore homes, the ultra-silent operation is a genuine selling point: many of our tanks sit in living rooms and bedrooms of HDB flats and condos, where a humming pump is impossible to ignore in close quarters. Quiet, reliable circulation makes a real difference to whether a tank is pleasant to live alongside.

The adjustable flow lets you dial circulation to the setup, whether you are driving a sump return, powering a canister, or simply keeping surface movement strong. That surface agitation matters in our climate, where water sits at 27-29C and holds less dissolved oxygen, so steady circulation helps gas exchange through hot afternoons. The twin suction mounts make it easy to position inside the tank or in a cabinet, and continuous-duty reliability suits year-round tropical running.

Browse the full water pumps range to match flow to your tank. Our water pump guide and return pump guide help you size and plumb it correctly for local setups.