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Octo Regal 250/300SSS Air Venturi (VarioS 6S)
SKU: ROP-VNTR-REGAL250SSS
Genuine OEM Direct Replacement: Authentic factory-spec gas induction venturi nozzle engineered explicitly for large-frame VarioS-6S controllable skimmer pumps running inside space-saving footprints.
Cropped Low-Profile SSS Footprint: Specially shortened intake sleeve pattern designed to provide maximum physical clearance inside space-saver skimmer base columns.
Optimized Vacuum Constriction: Technical bottleneck geometry accelerates water velocity across the intake well, maximizing passive atmospheric air-draw extraction curves.
Integrated Barbed Air Line Nipple: Outfitted with a molded vertical intake post that tightly grips standard flexible silicone air-silencer hoses without requiring structural hose clamps.
High-Impact Matte Grey Polymer: Fabricated from solid, commercial-grade injection-molded PVC engineered to withstand continuous saltwater friction and aggressive ozone exposure.
Toolless Push-Fit Compression Fitment: Slides directly into the center suction inlet of your pump's volute housing, creating an instant friction-locked, airtight hydraulic seal.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus Regal 250SSS & 300SSS Space Saver Replacement Air Venturi Nozzle
The Reef Octopus Regal Space Saver Air Venturi Nozzle (SKU: ROP-DC-VNTR-REGAL250SSS / ROP-DC-VNTR-REGAL300SSS) is an authentic factory-spec air-injection nozzle distributed by CoralVue to preserve the ultra-dense microbubble columns, foam stability, and organic extraction efficiencies of your high-performance filtration loop. In space-saving "SSS" protein skimmer configurations, the heavy-duty 36V controllable VarioS-6S pump resides directly inside or underneath the primary cone reaction chamber. Because the clearances inside this compact footed cylinder are incredibly tight, standard elongated straight or elbow venturis will physically hit the acrylic inner walls. This specialized low-profile SSS nozzle features an ultra-short intake collar that provides maximum mechanical clearance while generating the high vacuum draw required to pull in up to 2,000 LPH of atmospheric air.
Operating a flagship variable-speed skimmer pump around the clock under heavy vacuum pressures makes this high-velocity induction nozzle a prime target for mineral precipitation. Saltwater evaporation naturally creates rock-hard calcification and crystalline salt creep right inside the vertical air nipple, while raw organics form an internal slime coat that disrupts the calculated fluid bottleneck dynamics. Trying to ream out these tight areas with sharp metal tools often gouges the plastic walls, permanently ruining the vacuum seal. Running a space-saver skimmer pump with a clogged, warped, or cracked venturi causes massive drops in bubble density, turbulent water surges, and total collection cup flatlining. Swapping out the old nozzle with this genuine replacement instantly re-establishes an absolute airtight seal, restoring peak performance parameters.
Key Features
True Space Saver Sizing Tolerances: Precision machined to seat perfectly flush into the large-frame front volute cover native to Regal 250SSS and 300SSS model lines.
Ozone-Resistant Material Formulation: Dense PVC compound will not pit, yellow, become brittle, or degrade during structural descaling baths or continuous ozonizer injection routines.
Streamlined Low-Turbulence Internal Pathway: Smooth internal expansion walls eliminate early bubble coalescence, ensuring microbubbles travel directly onto the shredding pins.
(Note: This replacement hardware includes the single molded low-profile grey plastic venturi nozzle only. Flexible air tubing lines, volute covers, and primary pump motor stators are sold separately).
Verified Hardware Compatibility
SKU ROP-DC-VNTR-REGAL250SSS: Engineered exclusively for the Reef Octopus Regal 250SSS Space Saver Skimmer running the large-frame VarioS-6S engine.
SKU ROP-DC-VNTR-REGAL300SSS: Engineered exclusively for the extra-large Reef Octopus Regal 300SSS Space Saver Skimmer running the large-frame VarioS-6S engine.
What’s Included:
(1) Reef Octopus Replacement Regal SSS / VarioS-6S Molded Low-Profile Grey PVC Air Venturi Nozzle
(Note: Flexible silicone air lines, replacement volute O-rings, and primary skimmer pump assemblies are sold separately).
Technical Specs:
Official Manufacturing Title: Reef Octopus VarioS-6S Regal SSS Air Venturi
SKU / Factory Part Identifiers: ROP-DC-VNTR-REGAL250SSS or ROP-DC-VNTR-REGAL300SSS
Connection Interface Style: Push-Fit Female Front Volute Collar Fitment
Air Line Feed Port Size: Standard 1/4-Inch Flexible Silicone Tubing Barb
Material Matrix Composition: Saltwater-Inert High-Impact Injection-Molded Grey PVC
Primary Function: Fluid Velocity Acceleration, Space-Saving Air Induction, & Microbubble Fractionating
- Turn off your VarioS-6S pump controller and pull the main 36V power transformer out of the wall outlet to kill live electricity before servicing the wet end.
- Disconnect the flexible silicone air-intake line from the vertical hose barb on your old venturi nozzle housing.
- Slide the VarioS-6S pump assembly straight backward off the molded mounting rails inside your Regal space saver skimmer base to gain clean clearance access.
- Firmly grasp your pump's front volute cover with one hand, take hold of the old grey venturi body with the other, and twist while pulling straight outward to release the friction lock.
- Clean the exterior mounting collar of your volute cover to remove any built-up detritus, mineral scale, or biological film.
- Align your new low-profile air venturi straight over the open input port and push it firmly inward until it seats completely flush against the faceplate shoulder.
Pro Tips:
- Never Clean the Air Nipple Port with Metal Drill Bits or Screws. When salt creep or calcium carbonate inevitably crusts up inside the narrow vertical air line barb of this venturi, never use a metal drill bit, drywall screw, or knife point to scrape it out. The internal diameter of that air port is engineered to a precise millimeter tolerance to control the air-to-water ratio. Shaving or gouging the plastic walls with metal tools will enlarge the opening, permanently throwing off the vacuum dynamics and ruining the skimmer’s bubble pattern. Use a plastic toothpick or a warm citric acid soak instead.
- Apply a Micro-Smear of Silicone Grease for Easy Maintenance Teardowns. Because the venturi slides directly into the pump's intake collar using a tight friction fit, mineral scale can bind the two plastic pieces together over time, making them very difficult to separate. To make future maintenance much easier, rub a microscopic smear of 100% pure aquarium-safe silicone plumbing grease onto the inner mating ring of the new venturi before pushing it into place. This keeps the plastic from seizing up without affecting your water line.
- Perform an Overnight Citric Acid Soak to Clear Stubborn Scaling. If you notice your protein skimmer's foam line steadily dropping or producing large, irregular bubbles, the venturi is likely clogged with hidden internal calcium scaling. Every 3 to 4 months, slide the venturi off the pump and submerge it in a warm bath of water mixed with citric acid powder overnight. This safely dissolves hard scale build-ups inside the internal bottleneck without scratching or damaging the smooth polymer pathways.