Tunze 9430 DC Protein Skimmer

TUNZE® DOC Skimmers 9415 & 9430 – High-Performance, Compact Protein Skimmers

Designed for reef aquarists who demand performance and efficiency, the TUNZE® DOC Skimmers 9415 and 9430 deliver exceptional skimming power in a compact form factor—perfect for installation inside aquarium cabinets. These skimmers are powered by TUNZE Hydrofoamers 9420.040 or 9430.040, which combine powerful foam production with efficient water circulation.

Key Features:

• High-Capacity Skimming for Large Systems:
  Recommended for saltwater aquariums up to 3,500 liters (925 US gallons)

• Compact Yet Powerful Design:
  Ready to install right out of the box; includes cleaning accessories

• Efficient Foam Generation & Circulation:
  Powered by industry-leading Hydrofoamer Silence, delivering quiet and consistent air-water mixing

• Adjustable Performance:

  • Water Flow: Up to 2,500 l/h (660 GPH)

  • Air Flow: Up to 1,800 l/h (476 GPH)

  • Energy Use: Up to 38W

  • Immersion Depth: 100 – 200 mm (3.9" – 7.8")

• Stable & Functional Construction:

  • Skimmer Dimensions: 350 x 300 x 490 mm (13.8" x 11.8" x 19.3")

  • Skimmer Cup Volume: 2 liters (0.5 US gal)

  • Skimmer Cup Size (with lid): Ø215 x 218 mm (8.46" x 8.58")

  • Minimum clearance of 71 mm (2.8") needed to remove the cup

Advanced Skimming Features:

• Anti-Overfoaming System (Patented):
  Automatically adjusts foam production based on water level and surface tension, preventing overfoaming and maintaining optimal efficiency.

• Inner Mixing Cylinder:
  Stabilizes foam rise for consistent skimming and ensures bubble-free return water.

• Removable Post-Filter Chamber:
  Includes 300 µm nylon mesh for mechanical filtration with minimal biological activity—helps avoid nitrate buildup during extended maintenance intervals.
  Can also be filled with optional filter media such as activated carbon or phosphate absorbers.

• Energy-Efficient Operation:
  Optimized for performance while minimizing energy consumption.

3-Stage Anti-Foaming Protection:

1. Normal Operation:
   Foam rises steadily into the reactor.

2. Overfoaming Stage A:
   Increased surface tension elevates foam, temporarily drawing excess out.

3. Overfoaming Stage B:
   Bubble production stops automatically; foam production is reduced to restore balance.

Built for Silent Power and Long-Term Stability
The TUNZE DOC Skimmers are engineered to deliver professional-grade skimming with low maintenance and smart self-regulation—ensuring crystal-clear water and a healthy reef environment with minimal effort.