Red Starfish SD Protein Skimmers

DC needle-wheel skimmers for larger marine systems.

The Red Starfish SD series provides foam fractionation for marine water systems that require more capacity than a compact aquarium skimmer. Four models combine DC needle-wheel pumps with a reaction chamber, collection cup and adjustable water outlet. Select the model around the actual water volume, loading and installation space, rather than the tank volume alone.
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Red Starfish SD Protein Skimmers SD series
Red Starfish SD Protein Skimmers SD series
Red Starfish SD Protein Skimmers SD-300 and SD-400 front view
Red Starfish SD Protein Skimmers SD-300 and SD-400
Red Starfish SD Protein Skimmers SD-250
Red Starfish SD Protein Skimmers component layout
Red Starfish SD Protein Skimmers DC needle-wheel pump
Red Starfish SD Protein Skimmers needle-wheel impeller
Red Starfish SD Protein Skimmers water outlet adjustment
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Key features

  • DC needle-wheel pump configurations with single or twin pumps, depending on model.
  • Separate collection cup and a visible reaction chamber for routine inspection.
  • Water outlet adjustment and an air silencer are shown in the product diagram.
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Model comparison

Swipe to view more specifications

ModelSource volume m3Pump configurationDC powerSize mm
SD-2202 to 4DCR-600024V / 42W410 x 410 x 760
SD-2504 to 6DCR-800024V / 68W420 x 420 x 840
SD-3006 to 10DCR-6000 x 224V / 42W x 2590 x 490 x 950
SD-40015 to 20DCR-8000 x 224V / 68W x 2650 x 630 x 1230

Volume figures are manufacturer selection guidance, not a guaranteed treatment capacity. Size values reproduce the source footprint and overall height; confirm clearance for cup removal.

Applications

Marine aquariums, saltwater holding systems and marine filtration projects, subject to confirmation of salinity, loading and installation requirements.

Choose the right configuration

Please provide:

  • Operating water volume
  • Salinity
  • Biomass or feeding load
  • Available floor space and headroom
  • Water supply and return layout
  • Destination and quantity

Technical downloads

Related series

Frequently asked questions

  • How do I choose an SD model?

    Send your total operating water volume, salinity, stocking or feed load and installation arrangement. We will discuss the model and pump configuration before quoting.

  • Can the SD series be used in freshwater?

    This page is for marine enquiries. Freshwater suitability requires a separate technical review; do not select a model using the volume table alone.

Request a quotation

Send your requirements, quantity and delivery destination. We will confirm the proposed model, configuration and supply details before issuing a quotation.

Enquiry process

  1. 1Send your product or procurement requirement.
  2. 2Clarify the model, configuration or service scope.
  3. 3Review the proposed quotation and delivery arrangements.
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If you have a nameplate or drawing, you can also send it by email or WhatsApp.

Thank you. Your enquiry has been submitted to Qiu Rui. We will review your requirements and contact you to discuss the model, configuration and quotation. If you have a nameplate or drawing, you can also send it by email or WhatsApp.