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Octo CLSC-150INT/CLSC-160INT Aquatrance Venturi (AQ2000S)
SKU: ROP-AQ2000-V
- 100% Genuine OEM Factory Part: Manufactured directly by Reef Octopus as an exact drop-in structural match to replace cracked or calcium-blocked intake nozzles.
- Straight Extended-Neck Geometry: Engineered as an inline horizontal intake horn optimized for traditional, unrestricted in-sump skimmer plumbing chambers.
- Hydrodynamically Focused Constriction: Pinpoints interior fluid pathways to exploit the Venturi effect, pulling up to 720 L/H (25.2 SCFH) of clean ambient air.
- High-Impact Saltwater-Safe ABS: Injection-molded from a dense, non-leaching polymer matrix that resists brittle stress fractures and salt creep breakdown.
- Integrated Airline Barbed Nipple: Features a molded vertical air intake nipple tailored to grab standard 1/4-inch flexible silicone skimmer airline tubes.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus Aquatrance 2000S Venturi Adapter for Classic 150-INT & 160-INT (SKU: ROP-AQ2000-V)
The Reef Octopus Aquatrance 2000S Replacement Venturi Adapter (SKU: ROP-AQ2000-V) is an authentic, internal OEM air-induction component distributed by CoralVue to protect high-density bubble columns inside in-sump protein skimmers. In traditional in-sump (INT) configurations, the pump operates entirely submerged next to or underneath the skimmer neck riser, requiring an open, extended suction path to smoothly pull a balance of air and water. Because the skimmer operates continuously, this intake nozzle handles constant multi-directional suction forces. Hairline fractures from dropping the pump during cleaning, or brittle internal restrictions from heavy calcium scaling, will disrupt vacuum dynamics—dropping your total air volume significantly.
Molded from high-grade, marine-strength ABS plastic, the ROP-AQ2000-V is engineered to slip directly onto the central suction eyelet of the Aquatrance 2000S (18W) skimmer pump. This venturi acts as the direct factory-correct replacement part for the Classic 150-INT (CLSC-150INT) and Classic 160-INT (CLSC-160INT) protein skimmers, ensuring that air entering through your silencer line is cleanly mashed by the needlewheel matrix. By keeping an airtight connection on the suction side of your pump housing, this part guarantees a continuous column of waste-removing micro-bubbles.
Key Features
Corrects Weak Foam Production: Rectifies low-volume micro-bubble creation caused by loose or hair-fractured legacy fittings, bringing baseline air draw back up to its factory 720 L/H ceiling.
Tool-Free Slide Fitting Updates: High-tolerance friction-slip geometry pushes directly into position over the factory pump volute, bypassing messy glues.
100% Inert Reef Safety Line: Formulated using pure injection structural polymers that will never leach manufacturing chemical stabilizers or toxins into delicate coral reef tanks.
(Note: This retail SKU contains (1) individual Aquatrance 2000S straight venturi adapter nozzle. Silicone airlines, air silencers, internal pinwheel impellers, and replacement pump bodies are sold under separate product categories).
Reef Octopus Aquatrance Venturi Adaptation Matrix
| Component Classification Scale | Material SKU Identifier | Onboard Base Connection Track | Primary Target Skimmer Platform Match |
|---|---|---|---|
| Aquatrance Venturi AQ1000S | ROP-AQ1000-V | Standard Straight Slip | Classic 110-INT, Classic 110EXT Recirculating |
| Aquatrance Venturi AQ2000S | ROP-AQ2000-V | Standard Straight Slip | Classic 150-INT (CLSC-150INT), Classic 160-INT (CLSC-160INT) |
| Aquatrance Venturi AQ2000S SSS | ROP-AQ150S-V | Low-Profile SSS Slide | Classic 150-SSS Space Saver Sump Lines |
| Aquatrance Elbow Venturi 2000S | ROP-AQ2000-XV | 90-Degree Molded Drop Elbow | Classic 150EXT Recirculating External |
What’s Included:
(1) Reef Octopus Aquatrance Replacement 2000S Straight Venturi Adapter Nozzle
Technical Specs:
Official Manufacturing Title: Reef Octopus Aquatrance Venturi for AQ2000S (CLSC-150INT/CLSC-160INT)
SKU / Factory Part Identifier: ROP-AQ2000-V
Air Induction Connection Interface: Standard 1/4-Inch Integrated Slotted Barbed Nipple
Primary Structural Material Base: Saltwater-Safe Hardened High-Impact Injection ABS Plastic
Profile Geometry Dimensioning: Extended Straight Horizontal Inline Suction Horn
Chassis Platform Compatibility: Form-Fitted for Reef Octopus Classic 150-INT and Classic 160-INT In-Sump Skimmers
- Unplug your Reef Octopus protein skimmer pump from its electrical wall outlet. Lift the full skimmer out of your sump basin and transfer it to a dry, well-lit workspace.
- Pull the soft flexible silicone airline tubing away from the barbed intake nozzle on the top of your old straight venturi.
- Pull the old venturi adapter straight out and away from the center suction neck of the front volute pump cover. Pro Tip: If dried salt creep or calcium scaling has locked the plastic parts together, soak the pump face in warm water and white vinegar for 10 minutes to dissolve the scale before pulling.
- Wipe the internal tracking lines of the pump volute cover with a clean towel to remove any loose debris, dried salt crust, or organic slime film.
- Take your fresh ROP-AQ2000-V straight venturi and align its rear sleeve collar with the center suction ring of the pump cover.
- Push the adapter forward firmly until it seats squarely against the shoulder stop. Push your silicone airline back onto the barbed vertical nipple, lower the skimmer back into your sump chamber, and restore power.
Pro Tips:
- Never Mistake This Straight "V" Adapter for the Space Saver "150S" Variant. Because Reef Octopus operates a few distinct styles of the Aquatrance 2000S skimmer pump intake across their lines, it is incredibly easy to buy the wrong part variant by mistake. This standard straight ROP-AQ2000-V Nozzle is tailored with an extended horizontal neck for non-space-saver models like the Classic 150-INT or 160-INT. If you are servicing an ultra-compact Classic 150-SSS Space Saver model, the pump is turned sideways inside the body cone and requires the shortened ROP-AQ150S-V version to keep from ramming into the acrylic wall. Always check your skimmer suffix before purchasing.
- Routinely Scrub the Internal Air Nipple to Eliminate Silent Salt Clogging. If you notice your protein skimmer's performance dropping off over time, or if the water level inside the column keeps overflowing inexplicably, the problem is almost always a hard salt clog inside the venturi rather than a mechanical pump failure. Because the pump aggressively draws in ambient air, saltwater will naturally splash back into the line, drying out and creating a hard column of white calcium or salt creep inside the narrow intake port. This restriction chokes off air draw, causing the pump to pull only water and flood the skimmer cup. Every 4 to 6 weeks, slide a small pipe cleaner or a stiff bristle brush through the air nozzle to keep paths completely clear.
- Never Use Pliers or Hand Tools to Force the Venturi Onto the Volute Ring. Because this genuine OEM part is molded to exceptionally tight tolerances to form a perfect hydraulic vacuum seal, pressing the rigid plastic components together dry can sometimes feel very stiff. Avoid the temptation to grab a pair of household metal pliers to force the pieces together, as this will easily split the ABS plastic collar. Instead, wipe a tiny drop of fresh RO water inside the receiving sleeve of the new venturi. This acts as a safe, clean lubricant, allowing the adapter to slide into place smoothly without over-stressing the plastic structure.