Schego WS2/0.2 bar Single Outlet Air Pump 250L/hr 5W

IMPORTANT - These are not a usual air pump, they are designed for deep Aquariums 60cm+ and / or using with large air bars. They are high powered air pumps. With this in mind, use in smaller aquariums is not recommended and will generally be louder and vibrate more as they require the back pressure to work effectively.

• Air for life: membrane pumps
  Life in the aquarium is inconceivable without oxygen. Apart from further prerequisites such as heat and light, Schego membrane pumps contribute decisively to an aquarium becoming a habitat. Air is life.

  Oxygen is vitally necessary for fish and primitive sea species in the aquarium, for they have no CO2 respiration. Leading experts also recommend oxygen as remedy for the regeneration of diseased fish. Nevertheless, pure oxygen should not be provided as this can act toxically. Schego offers membrane pumps for aeration or use in filter systems and protein skimmers. This guarantees keeping the animals in a species-appropriate environment in the aquarium.
  All Schego membrane pumps work extremely reliably in continuous operation and are characterized by very quiet running, they have little vibration and are stable. Thanks to more than 70 years experience, high-quality and careful processing are a matter of course – naturally ”Made in Germany”.
  Different performance types with an air delivery of 100 l/h to 350 l/h are available. Long-life
  membranes, easily changeable prefilters, transparent housing with suspension are additional plus points with all Schego membrane pumps.

  Air for life – everywhere
  Membrane pumps for battery connection 12 V DC
  Schego pumps for battery connection enable a supply of oxygen where no mains power is available.

  These pumps have been developed for fish and live foods transport. Fish suffer from lack of oxygen during long lasting transports, especially in the summer months, so that the tanks must be aerated. Connecting the air pump to the car battery or to the cigarette lighter is suitable in this case. Therefore the approved 12 V pumps are available with a mounted car battery plug.
  In recent years power supply by means of solar cells, especially in the leisure area, has become increasingly popular. Schego pumps in combination with solar cells are very well suited for this application and have proved their worth.

art. no. 920
250 l/h
5 Watt
130 x 70 x 50 mm
1 m cable with Euro plug
with regulation
for 2 m water column

The Schego WS2 Single Outlet Air Pump 250 L/hr 5W is a specialized high-pressure air pump from Schego, a German manufacturer renowned for its robust and reliable aquarium equipment. While it shares the 250 L/hr output and 5W power consumption with the Schego Optimal, the "WS2" designation indicates its primary advantage: higher pressure capabilities, making it ideal for deeper tanks or applications requiring significant back pressure.

Here's a breakdown of its key features and specifications:

Key Features:

• Single Outlet: Designed for a single air line.
• High Air Output: Delivers 250 liters per hour (L/hr) at 0 meters water column (mWC), with a strong output of approximately 200 L/hr even at 0.75 mWC.
• High Pressure (0.2 bar / 2.0 mWC / 2.9 psi): This is the defining feature of the WS2. It can push air effectively to depths of up to 3 meters (3.0 mWC or 0.2942 bar), making it perfect for tall aquariums, deep pond applications, or demanding protein skimmers and fluid bed filters that require significant back pressure.
• Adjustable Flow: Features a manual screw for fine-tuning the air output to match specific requirements.
• Quiet Operation: Consistent with Schego's reputation, the WS2 operates very quietly with minimal vibration, rated at 39 dB(A).
• Long-life Membranes: Built with durable membranes for extended service life.
• Easily Changeable Prefilters: Simple and convenient maintenance with accessible prefilters.
• Transparent Housing with Suspension: Allows for easy monitoring and flexible placement.
• "Made in Germany": Schego's extensive experience and commitment to quality manufacturing ensure reliability and durability.
• Energy Efficient: Maintains a low power consumption of 5 Watts despite its high pressure and flow.

Specifications:

• Dimensions (L x W x H): Approximately 130 x 70 x 50 mm.
• Flow Adjustment: Yes, via a manual screw.
• Max Pressure: 3.0 mWC (equivalent to approximately 0.2942 bar or 4.267 psi). This is significantly higher than the Optimal model's 2.5 mWC.
• Power Consumption: 5 Watts.
• Noise Level: 39 dbA.
• Operating Voltage: 220-240V/50Hz (for the Australian market, with an Australian plug).
• Cable Length: 1 meter.

Considerations:

• Non-return Valve: As with all air pumps, a non-return valve (check valve) must be installed on the air hose to prevent water from siphoning back into the pump during a power outage. Water ingress is not covered by warranty.
• Deep Water Applications: The WS2 is specifically engineered for situations where higher pressure is needed, making it suitable for larger or deeper aquariums, complex air-driven filters, or efficiently running protein skimmers where the air needs to overcome a significant water column.
• Comparison to Optimal: While both the Optimal and WS2 have 250 L/hr output and 5W power, the key differentiator is the WS2's superior maximum pressure. If you have a deeper tank or a high-resistance air device, the WS2 is the preferred choice.

• Item No: SHE04
• Barcode: 4005256009209
• Weight: 0.67Kg
• Dimensions: 130 x 70 x 50cm
• Warranty: 2 years
• Suitable for: Freshwater and Marine

• Outlets: Single Outlet
• Power / power per outlet: 250l/h
• Power watts: 5w
• Speed Control: Yes
• Tank size: up to 2m deep
• Max head height: