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Octo CLSC-200INT / CLSC-225INT Aquatrance Venturi (AQ3000S)
SKU: ROP-AQ3000-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 High-Flow Geometry: Engineered as a large, inline horizontal horizontal suction horn optimized for high-capacity in-sump skimmer plumbing arrays.
- Hydrodynamically Focused Constriction: Pinpoints interior fluid pathways to exploit the Venturi effect, pulling up to 880 L/H (31 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 an integrated 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 3000S Venturi Adapter for Classic 200-INT & 225-INT (SKU: ROP-AQ3000-V)
The Reef Octopus Aquatrance 3000S Replacement Venturi Adapter (SKU: ROP-AQ3000-V) is an authentic, internal OEM air-induction component distributed by CoralVue to protect high-density bubble columns inside large-scale in-sump protein skimmers. In heavy-duty in-sump (INT) configurations, the pump operates entirely submerged next to or underneath the primary bubble diffusion grid, requiring an unhindered, high-volume suction path to smoothly pull an aggressive balance of air and water. Because these large skimmers handle high-volume waste extractions, the internal intake nozzle is subjected to non-stop hydraulic vacuum forces. Hairline fractures from dropping the pump during maintenance, or structural bottlenecks from heavy calcium scaling, will cause internal vacuum failure—dropping your total air volume significantly.
Molded from high-grade, marine-strength ABS plastic, the ROP-AQ3000-V is engineered to slide directly onto the central suction eyelet of the heavy-duty Aquatrance 3000S (35W) skimmer pump. This venturi acts as the direct factory-correct replacement part for the Classic 200-INT (CLSC-200INT) and Classic 225-INT (CLSC-225INT) 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 880 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 or hardware.
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 3000S 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, Classic 160-INT Sump Lines |
| Aquatrance Venturi AQ3000S | ROP-AQ3000-V | Standard Straight Slip | Classic 200-INT (CLSC-200INT), Classic 225-INT (CLSC-225INT) |
| Aquatrance Output Adapter 225 | ROP-AQOA-225 | 32mm Slip Space Saver Port | Classic 225-SSS Space Saver Sump Lines |
What’s Included:
(1) Reef Octopus Aquatrance Replacement 3000S Straight Venturi Adapter Nozzle
Technical Specs:
Official Manufacturing Title: Reef Octopus Aquatrance Venturi for AQ3000S (CLSC-200INT/CLSC-225INT)
SKU / Factory Part Identifier: ROP-AQ3000-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 (High-Flow Throat)
Chassis Platform Compatibility: Form-Fitted for Reef Octopus Classic 200-INT, Classic 225-INT, and SRO-3000INT 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-AQ3000-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 Output Variant. Because Reef Octopus operates a few distinct styles of the Aquatrance 3000S skimmer pump attachments across their modular lines, it is incredibly easy to buy the wrong part variant by mistake. This standard straight ROP-AQ3000-V Nozzle is tailored as an air-drawing intake horn for traditional in-sump models like the Classic 200-INT or 225-INT. If you are trying to find the plumbing attachment piece on the discharge side of a space-saving model to route water into the diffuser plate, you are looking for the ROP-AQOA-225 Output Adapter instead. Always check your pump installation direction 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.