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Octo CLSC-150EXT Aquatrance Venturi (AQ2000S)
SKU: ROP-AQ2000-XV
- 100% Genuine OEM Factory Part: Manufactured directly by Reef Octopus as an exact drop-in structural match to replace cracked or calcified intake elbows.
- Specialized 90-Degree Geometric Profile: Engineered as a rigid space-saving elbow to route external plumbing connections flush against the skimmer chassis.
- 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.
- Pre-Loaded Sealing O-Ring Pack: Arrives complete with factory-original rubber o-ring components to guarantee an air-tight, water-tight vacuum lock.
- High-Impact Saltwater-Safe ABS: Molded from a dense, non-leaching polymer matrix that resists brittle stress fractures under out-of-sump configuration pressures.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus Aquatrance 2000S Elbow Venturi for Classic 150EXT (SKU: ROP-AQ2000-XV)
The Reef Octopus Aquatrance 2000S Replacement Elbow Venturi (SKU: ROP-AQ2000-XV) is an authentic, external OEM air-induction component distributed by CoralVue to preserve high-velocity fractionation inside out-of-sump external protein skimmers. In external recirculating (EXT) configurations, the pump operates entirely outside the primary skimmer column, drawing water from the skimmer body and blasting it back inside. Because this process happens completely dry and out of the water, the suction-side venturi must pull a completely airtight and watertight seal against the pump casing. Hairline fractures from dropping the pump during cleaning, or worn down internal sealing rings from heavy calcium scaling, will cause the pump to draw air incorrectly or micro-leak—dropping your total air volume significantly.
Molded from high-grade, marine-strength injection polymers, the ROP-AQ2000-XV features an Integrated 90-Degree Elbow Housing. This unique configuration lets your suction plumbing paths bend tightly alongside the main cast-acrylic cone structure, reducing the overall footprint inside your equipment closet. It functions as the direct factory-correct replacement part for the Classic 150EXT Recirculating External Skimmer (CLSC-150EXT) powered by the Aquatrance 2000S (18W) pump block. Outfitted with precision alignment pins that slide flush against the factory rubber sealing ring, this replacement part ensures all generated micro-bubbles are forced straight into the needlewheel to maintain optimal waste fractionation.
Key Features
Restores Peak Air-Injection Potentials: Corrects degraded vacuum dynamics caused by cracked legacy fittings, lifting air intake volumes back up to its factory 720 L/H ceiling.
Bypasses Priming and Cavitation Faults: Delivers a tight hydraulic seal that stops micro-air leaks from forming, ensuring your recirculating pump primes reliably after power drops.
Complete Drop-In Update Kit: Package comes fully loaded, arriving pre-fitted with the dedicated vertical air intake nozzle and custom-molded internal rubber o-ring components.
(Note: This retail SKU contains (1) complete Aquatrance 2000S Elbow Venturi assembly with o-ring. Flexible silicone air lines, external union couplers, air silencers, and replacement pump bodies are sold under separate product categories).
Reef Octopus Aquatrance Venturi Adaptation Matrix
| Component Classification Scale | Material SKU Identifier | Onboard Connection Face Profile | Primary Target Skimmer Platform Match |
|---|---|---|---|
| Aquatrance Venturi AQ1000S | ROP-AQ1000-V | Straight Horizontal Friction Slip | Classic 110-INT, Classic 110EXT Recirculating |
| Aquatrance Venturi AQ2000S | ROP-AQ2000-V | Straight Horizontal Friction Slip | Classic 150-INT, Classic 160-INT Sump Lines |
| Aquatrance Elbow Venturi 2000S | ROP-AQ2000-XV | 90-Degree Molded Drop Elbow | Classic 150EXT Recirculating External (CLSC-150EXT) |
| Aquatrance Venturi AQ3000S | ROP-AQ3000-V | Straight High-Flow Union Collar | Classic 200-INT, Classic 225-INT Sump Lines |
What’s Included:
(1) Reef Octopus Aquatrance Replacement 2000S Elbow Venturi Housing Nozzle
(1) Factory-Original Internal Rubber Sealing O-Ring Component
Technical Specs:
Official Manufacturing Title: Reef Octopus Aquatrance Elbow Venturi for AQ2000s, Classic 150EXT Skimmer
SKU / Factory Part Identifier: ROP-AQ2000-XV
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: 90-Degree Right-Angle Space-Saving Elbow Drop Housing
Compatible Pump Engine Block: Calibrated Specifically for the Reef Octopus Aquatrance 2000S (18W) Stator
Official Manufacturer Warranty Support: 90-Day Limited Factory Defect Coverage managed via CoralVue
- Unplug your Reef Octopus Classic 150EXT external recirculating skimmer pump from its electrical wall outlet. Close your system feed lines, isolate the water loop, and move the external Aquatrance pump over to a clear workspace.
- Pull the soft flexible silicone airline tubing away from the barbed intake nozzle on the top of your old elbow venturi.
- Twist your old, damaged elbow adapter counter-clockwise roughly 15 degrees to disengage the interlocking tabs from the front of the pump block stator frame, and pull the cover straight away.
- Wipe the internal tracking lines of the pump face rim with a clean towel to remove any loose debris, dried salt crust, or organic slime film.
- Take your fresh ROP-AQ2000-XV elbow venturi and confirm that the internal rubber sealing o-ring is sitting flat and flush inside its rear structural channel.
- Align the locking ears of the new elbow with the open slots on your pump stator face, press forward firmly, and twist clockwise to lock it shut. Reconnect your airline, lock your plumbing unions, and restore power.
Pro Tips:
- Never Mistake This Elbow "XV" Adapter for the Standard Straight "V" Version. Because Reef Octopus operates two distinct styles of the Aquatrance 2000S skimmer pump intake across their lines, it is incredibly easy to buy the wrong part variant by mistake. The standard Classic 150-INT in-sump skimmer uses a straight, long-necked horizontal venturi horn (ROP-AQ2000-V). If you try to mount that standard straight part onto an external recirculating Classic 150EXT build, it will protrude too far out, throwing off your hard-plumbed metric union alignment tracks completely. Always verify your skimmer features the EXT external suffix to ensure you need this right-angle elbow drop.
- 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.
- Apply a Thin Layer of Reef-Safe Silicone Grease to the O-Ring for an Airtight Seal. When mounting your new ROP-AQ2000-XV elbow cover onto an older pump block, take a moment to wipe the included rubber sealing O-ring with a tiny dab of reef-safe silicone grease. Because external recirculating skimmers operate outside your sump, any tiny imperfection or dry track on a sealing ring can pull ambient air into the casing or leak water onto your floor. Lightly lubricating the ring helps the new volute tabs slide into place smoothly without binding, preventing micro-leaks and ensuring an airtight vacuum lock.