Tunze DOC Skimmer 9430 DC

Tunze DOC Skimmer 9430 DC – Smart Skimming Power in a Compact Footprint

  The Tunze DOC Skimmer 9430 DC brings intelligent performance and serious foam control to reef aquariums. With compact dimensions and digitally adjustable power, this skimmer makes short work of high bioload systems while fitting snugly in most sump cabinets.    

Quiet Yet Powerful: Tunze DOC Skimmer 9430 DC Foam Extraction System

This unit isn’t just efficient—it’s designed to adapt. With adjustable water and air intake via the Turbelle controller, the 9430 DC provides:

• Water Flow: Adjustable up to 660 GPH
• Air Flow: Up to 476 GPH of fine bubbles
• DC Motor: Energy-efficient and safety low-voltage (12–24V)
• Cable Length: 10 feet from controller to power supply

Tunze DOC Skimmer 9430 DC Is Built for Reef Tanks with Variable Needs

This skimmer adapts to reef environments ranging from SPS-dominant systems to high-volume fish-only tanks.

• Aquarium Size: Up to 925 gallons (fish-only), or 240 gallons (heavy coral bioload)
• Power Draw: 24–38 watts (digitally adjustable)
• Pump Control: Tunze Turbelle® Controller (included)
• Skimmer Cup Volume: 2 liters (0.5 gallons)
• Immersion Depth Range: 3.9 – 7.8 inches
• Footprint: 13.8 x 11.8 x 19.3 inches

DOC Skimmer 9430 DC Uses Anti-Overfoaming for Stability

Skimmer overflows can turn your sump into a foamy mess. Tunze solves that with a three-stage Anti-Overfoaming System that responds dynamically to changing surface tension in the water:

Anti-Foaming Response:

• Stage A: Foam level increases and exits foam reactor
• Stage B: Bubble production halts to prevent overflow
• Stage C: System resets and resumes normal skimming

Features That Make the DOC Skimmer 9430 DC Stand Out

• Removable 300-micron post-filter mesh chamber for added mechanical filtration
• Internal mixing cylinder stabilizes foam and prevents bubble bursts
• Built-in phase water zone optimizes foam extraction
• Skimmer cup also functions as foam reactor and lifts out easily
• Wide-neck design makes cleaning and viewing simple

How to Choose the Right Skimmer Capacity for Your Biotope

Depending on your reef’s nutrient sensitivity, reduce the rated capacity accordingly:

• Low Sensitivity (leathers/anemones): Full 925 gallons
• Mixed Reef (LPS + softies): 40% reduction (~550 gal.)
• SPS-Dominant or Ultra Low Nutrient Systems: 60–70% reduction (~300 gal.)
• High Fish Load with SPS: 70% reduction is essential

Final Thoughts

Tunze has once again built a reefkeeper's workhorse. With DC control, minimal noise, and advanced foam management, this skimmer lets you dial in perfect clarity—without daily tinkering. Whether you're running a coral farm or just want spotless water, the 9430 DC gets it done with style and silence. Model: 9430.001 Includes controller, DC pump, skimmer cup, and removable post-filter chamber          

Tunze Gear and Skimmers

   

• All Tunze gear —shop the collection
• Internal, external, hang on the back protein skimmers
• Internal Skimmers for a larger bioload

     

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