Octo SRO 3000EXT Collection Cup
SKU: ROP-CC-SRO3000EXT
- 100% Genuine OEM Factory Part: Manufactured directly by Reef Octopus as an exact drop-in structural match to swap out cracked, dropped, or heavily calcified collection cups.
- Commercial-Grade Cast Acrylic: Constructed from a robust, optical-grade acrylic matrix that completely resists yellowing and brittle breakdown under prolonged exposure to aggressive ozone or salt air.
- Pre-Tapped Gravity Drain Port: Features an integrated waste output port designed to channel dark liquid skimmate straight into a secondary waste collector box or remote drain line.
- Refined Foam Directional Guide: Incorporates a custom inner collar slope designed to gently condense rising waste bubbles, transforming them into heavy liquid skim without neck turbulence.
- Explicit External Series Alignment: Specially dimensioned to press-fit cleanly onto the 120mm (4.7-inch) neck track of the SRO-3000EXT external recirculating skimmer chassis.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus SRO-3000EXT Replacement Collection Cup (SKU: ROP-CC-SRO3000EXT)
The Reef Octopus SRO-3000EXT Replacement Collection Cup (SKU: ROP-CC-SRO3000EXT) is an authentic, structural OEM component distributed by CoralVue to sustain flawless waste fractionation inside external recirculating protein skimmers. External skimmers (EXT) function entirely out-of-sump, making absolute structural sealing mandatory across every square inch of the acrylic housing. The collection cup handles intense air backpressure generated by the high-volume 40W Bubble Blaster HY-3000s pump matrix. Over years of heavy-duty operation, dropping the cup into a sink during cleanings, harsh impact damage, or micro-fractures along the bottom neck joint can create volatile air/water bypass leaks. If a leak develops on an external skimmer cup, processed wastewater and foul smells can escape into your cabinet closet. Swapping out a compromised cup instantly restores an airtight, secure compression seal.
Molded to meet meticulous factory edge specifications, this heavy-duty cup features a 200mm (7.9-inch) outer bowl diameter paired with an integrated 120mm inner riser neck. The bottom neck sleeve features a precise taper that slides tightly over your primary skimmer body flange. Equipped with a molded lower outlet nozzle, it lets users attach standard flexible line hosing to divert concentrated waste proteins directly into an external locker before it can build up and degrade your water column.
Key Features
Eliminates Volatile Cabinet Salt Creep: Re-establishes an airtight, watertight seating connection against the external skimmer neck, keeping dry equipment zones safely protected.
Simplifies Periodic Servicing: Precision slip-neck sizing provides a smooth, tool-free lift mechanism, letting you pull the cup away for deep cleaning without shaking the entire skimmer column.
100% Saltwater-Inert Safety Line: Built from premium cast acrylic that will never leach manufacturing chemical stabilizers, toxins, or color residues into delicate coral reef setups.
(Note: This retail SKU contains (1) individual SRO-3000EXT cast acrylic collection cup with a built-in drain nozzle. Plastic drain valves, collection cup lids, neck cleaners, and primary skimmer body towers are sold under separate product categories).
What’s Included:
(1) Reef Octopus SRO-3000EXT Cast Acrylic Replacement Collection Cup Assembly with Pre-Tapped Drain Nozzle
Technical Specs:
Official Manufacturing Title: Reef Octopus SRO-3000EXT Collection Cup
SKU / Factory Part Identifier: ROP-CC-SRO3000EXT
Outer Bowl Diameter Sizing: ø200mm (7.9-Inch Casing Profile)
Internal Core Neck Diameter: ø120mm (4.7-Inch Riser Tracking Line)
Structural Framing Material Base: Saltwater-Safe, Heavy-Duty Cast Optical Acrylic Plastic
Drain Port Assembly Profile: Barb-Style Gravity Skimmate Overflow Output Nozzle
Chassis Platform Compatibility: Form-Fitted strictly for the Reef Octopus SRO-3000EXT (External Recirculating Model)
- Unplug your Bubble Blaster HY-3000s pump engine and isolate your external feed source line to collapse the rising foam column inside the skimmer body.
- Grip the wide outer rim of your old collection cup firmly with both hands, twist gently back and forth, and lift it straight upward and away from the neck of the skimmer column.
- The Critical Neck Cleaning Step: Inspect the receiving neck track on the main skimmer column. Use a soft towel dipped in warm vinegar to thoroughly wipe down the inner and outer connection rings to clear away any thick organic mud, dried salt crust, or calcified scale.
- Retrieve your fresh ROP-CC-SRO3000EXT collection cup from its box. If you are using a remote waste locker, push your 1/2" flexible drain line tubing onto the barbed output nozzle at the base of the new cup.
- Align the center neck ring of the new replacement cup with the top opening of your skimmer body. Press downward firmly and evenly until the cup seats completely flat and level against the shoulder stop.
- Place your collection cup lid back over the top bowl rim, double-check that your waste drain line valve is open, restore power to your pump systems, and resume high-performance protein skimming.
Pro Tips:
- Never Mistake This External Cup for the Standard SRO-3000INT Sump Version. Because Reef Octopus balances the internal air-handling dynamics of their skimmers tightly, it is incredibly easy to select the wrong replacement cup variant by mistake. While both models feature an 8-inch body hull, the SRO-3000INT internal sump model and the SRO-3000EXT external model utilize completely different collection cup heights and neck connection slopes to account for internal sump vs. open cabinet plumbing layout variances. To ensure an absolutely flush, airtight, and leak-free compression fit over your out-of-sump external tower, always confirm your unit features the EXT designation.
- Never Scrub the Cast Acrylic Core with Rough Kitchen Scratch Pads. Because this high-end replacement component is engineered from optical-grade cast acrylic to give you a clear view of your skimmer's waste output, it can scratch easily if handled incorrectly. Cleaning the inside of the collection cup neck with stiff wire brushes, rough green kitchen scratch pads, or coarse paper towels will leave micro-hairline scratches across the plastic. These micro-scratches trap organic slime faster, cloud the acrylic surface, and make it much more difficult for waste bubbles to slide up into the collection bowl. Always use a soft microfiber towel or a smooth sponge with warm, fresh water during your weekly cup cleanings.
- Execute a Monthly Hot Water Rinse Down the Drain Port to Stop Waste Crusting. The dark organic skimmate pushed out of your display tank by the HY-3000s pump matrix is packed with highly concentrated, sticky proteins and fish lipids. As this heavy waste fluid flows over the neck and out through the bottom barbed drain nozzle, thin layers of organic sludge will naturally bake onto the inside of the narrow drain hole. If left unmanaged for a few months, this waste will dry into a hard, rubbery clog that completely plugs up the line, causing the collection cup to unexpectedly overflow onto your floor. Make it a routine habit during your weekly cup maintenance to pour a cup of boiling-hot fresh water straight down the drain port to flush away any organic sludge.