Bubble King® Double Cone 150 + RDX DC 12V Protein Skimmer for Aquariums up to 375 Liters

for aquariums up to 375 liter

hard facts Bubble King^® Double Cone 150:
max. 750 l/h Air - 3.500 l/h Water = 1 Pump RD X 3000 DC 12V
Base plate: 19,5 cm x 24,5 cm / height ~ 50 cm
Water level: ~ 150 mm up to ~ 200 mm
Outlet absorbate: 320 mm
Weight skimmer: 5 kg inclusive pump

Technical data Bubble King^® Double Cone 150:

Skimmer-pump: Red Dragon^® X 3000
Delivery rate: 200-750 l/h  Air inlet ~ 300-3.500 l/h Water inlet
wattage power: Pmax = 30 Watt/h
Speed adjustable Brushless DC pump
Revolution per minute (rpm) - Display
Adjustable in 8-steps from ~ 7W up to 30W
Operating voltage: 100-240 Volt 50-60 Hz (12V Technology)
Protection class pump: IP 68  control unit: IP 66  
Weight pump without controller: 0,6 kg
Height of intake side: center 45 mm
Dimension pump: 80 mm wide / 130 (120 without inlet protection) mm length / ~ 110 (135 with socket) mm height
Dimension control unit: 20 mm wide / 90 mm length / ~ 170 mm height

Dimension skimmer without pump:
195 mm wide / 245 mm length / ~ 500 mm height
Dimension skimmer with pump (90° to the torque tube):
210 mm wide / 310 mm length / ~ 500 mm height
Dimension skimmer with pump (compared the torque tube):
180 mm wide / 370 mm length / ~ 500 mm height

Weight skimmer: 5 kg inclusive pump

  Data_sheet_and_spare_parts.pdf     Operating_and_maintenance_manual.pdf
  Power_curves_and_controller_settings.pdf

The skimmer has default 2 pump connection options.
 

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Why should I buy a Royal Exclusiv^® protein skimmer?

Royal Exclusiv^®—and particularly the Bubble King^® line of skimmers—is widely regarded within the marine aquarium hobby as one of the very best skimmers available anywhere. Here are the key reasons:
 

Quality and Craftsmanship

Royal Exclusiv^® is a German company based in the Cologne area that has been manufacturing protein skimmers in Germany since 1986. Their units are precision-milled from high-quality acrylic glass; while others may skimp on materials, RE goes the extra mile—the result is components that are extremely precise, durable, and manufactured to tight tolerances. This represents "Made in Germany" at its very highest level, featuring a superior selection of materials ranging from piping by Georg Fischer and Plexiglas^® by Polyavantis to PVC sheets by Simona. meerwasserforum.info

In-House Developed Pumps

The heart of every Bubble King^® skimmer is its proprietary Red Dragon^® pump (formerly AC-powered, now DC-powered and fully controllable). Royal Exclusiv^® develops and manufactures these pumps entirely in-house—they are not outsourced OEM components. This gives them complete control over performance, quiet operation, and longevity.
 

High Performance with Very Low Power Consumption

Enormously energy-efficient (high operational efficiency)—meaning it saves electricity while remaining absolutely powerful. This is a crucial factor, as a protein skimmer in a marine aquarium needs to run 24/7.

Extremely Quiet Operation

For many users, this is the deciding factor: Compared to other high-performance skimmers, Bubble Kings are exceptionally quiet—making them perfectly suitable even for use in a living room. meerwasserforum.info

Skimming Performance

The size and uniformity of the bubbles are of the highest caliber. Smaller, more uniform bubbles provide a greater surface area for protein adhesion—this is the fundamental principle behind an effective protein skimmer, and Royal Exclusiv^® has pushed the technical execution of this concept to an advanced level.

Model Variety

From small tanks to massive display aquariums, there is a suitable model for every need:

CONCLUSION

Royal Exclusiv^® isn't for everyone—but perhaps for more aquarists than they might think.

Anyone who runs a saltwater tank or marine aquarium—and has ever worked with an average protein skimmer—is familiar with the situation: constantly readjusting, observing, and readjusting again—all while remaining uncertain whether water quality is truly staying at a consistently high level. Eventually, you have to ask yourself: does the money you thought you saved at the start actually end up costing you more effort and compromise in the long run?

This is exactly where a Bubble King^® comes in. It was designed to operate reliably and consistently—quietly, efficiently, and without the need for constant tinkering. Instead of having to regularly fuss with your equipment, you can focus on what truly matters: the reef and its inhabitants.

The equipment housed in your sump often determines just how relaxing the daily experience of marine aquaristics can actually be. Anyone who has experienced firsthand just how quietly and reliably a high-quality protein skimmer operates quickly understands why many experienced aquarists don't hesitate for a moment when setting up their next tank.

For the benefits are evident not only in stable water parameters but also in day-to-day operation: less maintenance, less uncertainty, and greater enjoyment of the hobby. Royal Exclusiv^®, therefore, represents more than just a purchase—it is an investment in long-term stability, convenience, and confidence in your equipment.

Who stands to benefit the most? If you run a heavily stocked reef tank, prioritize quiet operation, or simply value long-term reliability over cost-cutting—then a Royal Exclusiv^® is hard to beat. Many users report that, once they made the purchase, they never felt the need to switch again.