OPUS G2 250 Slim-Line with Grey Cabinet (Aquarium, Plumbing, Sump & Stand Kit)
$1,899.00
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Freight shipping: $200 U.S.; $600 international where available. No standard free shipping. Delivery scheduling and additional international quote charges may apply.
Shipping & Delivery
Oversized/Freight shipping: $200. The standard $100 free-shipping offer does not apply.
Most in-stock orders process in 1–3 business days. Estimated standard transit is 5–12 business days after dispatch. Backorders, preorders, and special orders follow their stated lead times. Dates are estimates, and separate shipments may have separate charges.
Review the Shipping & Live Arrival Policy and final charges at checkout. International rates and specialty charges are separate from domestic standard offers.
OPUS G2 250 Slim-Line with Grey Cabinet
The NYOS OPUS G2 250 Slim-Line with a Grey Cabinet is a stunning 204 L (56 gal) system with clean architecture, matte white finish, and discreet push-to-open functionality.
Furniture-Grade Design Premium Aquarium Performance & Quality
The Nyos OPUS G2 Slim-Line is where modern interior design meets world-class reef performance. Every system is crafted for reef keepers who want an aquarium that doesn’t just stand out — it fits in. The Slim-Line series combines the clean geometry of a minimalist display with the technical excellence of German engineering, creating a reef system that complements your home like a piece of fine furniture.
The Slim-Line cabinet sits flush with the aquarium footprint, forming a seamless silhouette with zero overhang. High-clarity low-iron glass panels, hidden overflow, and rimless construction ensure that every view is pure reef — elegant, clean, and unobtrusive.
Each OPUS G2 Slim-Line comes complete with a pre-plumbed sump, glass reservoir, and refill tank, making setup simple and maintaining your reef effortless. Built for those who want performance without clutter, it’s the perfect balance of form and function.
Key Features
• Seamless Slim-Line cabinet design that aligns perfectly with the display tank footprint
• Ultra-clear low-iron glass for vivid, distortion-free viewing
• Rimless display with transparent silicone and hidden overflow system
• Factory-preassembled plumbing kit — plug and play, no cutting or gluing required
• Multi-chamber glass sump with integrated filter sock holders
• Built-in top-off reservoir for automatic water-level control
• Moisture- and impact-resistant cabinet in matte white or basalt grey
• Push-to-open or soft-close doors (model dependent)
• German-manufactured for precision, durability, and long-term reliability
What’s Included
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Display aquarium (ultra-clear low-iron glass)
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Slim-Line cabinet (preassembled)
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Pre-fitted plumbing set with all necessary unions and fittings
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Glass sump with multi-chamber layout
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Integrated top-off reservoir
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Filter sock(s) and mounting hardware
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Return line fittings and drain system components
(Additional accessories such as skimmer, lighting, return pump, and heater sold separately.)
Model Size Chart
| Model | Display Volume | Tank Dimensions (L × W × H) | Cabinet Dimensions (L × W × H) |
|---|---|---|---|
| OPUS G2 200 Slim-Line | 44 gal / 166 L | 21.7" × 21.7" × 20.9" | 21.7" × 21.7"" × 35.4" |
| OPUS G2 250 Slim-Line | 54 gal / 204 L | 27.6"x21.7"x20.9" | 27.6" × 21.7"" × 35.4" |
| OPUS G2 300 Slim-Line | 69 gal / 262 L | 35.4" × 21.7 × 20.9" | 35.4" × 21.7"" × 35.4" |
| OPUS G2 440 Slim-Line | 100 gal / 378 L | 49.2" × 21.7" × 20.9" | 49.2" × 21.7"" × 35.4" |
Sump & Equipment Guide
| Model | Sump Volume | Sump Dimensions (L × W × H) | Recommended Return Pump (sold separately) | Recommended Nyos QUANTUM Skimmer (sold separately) |
|---|---|---|---|---|
| OPUS G2 200 Slim-Line | ~9 gal / 35 L | 13" × 20" × 13.8" | 525 GPH (2000L/h) | QUANTUM 120 |
| OPUS G2 250 Slim-Line | ~11 gal / 42 L | 15.8"x 20"x 13.8" | 525 GPH (2000L/h) | QUANTUM 120 |
| OPUS G2 300 Slim-Line | ~14 gal / 52 L | 20" x20" x13.8" | 525 GPH (2000L/h) | QUANTUM 160 |
| OPUS G2 440 Slim-Line | ~16.4 gal / 62 L | 23.6" x20" x 13.8" | 525 GPH (2000L/h) | QUANTUM 220 |
Recommended Additional Equipment (Sold Separately)
| Model | Lighting Recommendation | Circulation Pump Volume | Heater Recommendation (if using 2 heaters) |
|---|---|---|---|
| OPUS G2 200 Slim-Line | 1 × ATI Straton X 102 | 500–1,000 GPH total flow | 2 × 150 W heaters |
| OPUS G2 250 Slim-Line | 1 × ATI Straton X 102 | 1,000–1,500 GPH total flow | 2 × 200 W heaters |
| OPUS G2 300 Slim-Line | 2 × ATI Straton X 102 | 1,200–2,000 GPH total flow | 2 × 250 W heaters |
| OPUS G2 440 Slim-Line | 2 × ATI Straton X 102 | 3,200-3,500 GPH total flow | 2 × 300 W heaters |
(Lighting and circulation guidance assumes mixed reef setup with moderate coral density; adjust as needed for SPS or LPS dominant systems.)
Why It’s Better
• Designed to blend seamlessly with modern décor — elegant, minimal, and unobtrusive
• Furniture-grade construction that complements high-end interiors
• Hidden plumbing and equipment maintain a clean, gallery-quality look
• Optimized for performance and simplicity — setup to running in hours, not days
• Silent operation and consistent water level for stress-free reefing
Why shop with Infinity & Beyond Aquatics?
A large aquarium is a big decision, and the details matter. Reach a real aquarium specialist for help reviewing what comes with your system, planning equipment and livestock, and sorting out questions before you order. We also offer aquarium setup and installation services in our North Jersey service area; contact us for availability and a quote.
Freight shipping and delivery
Measure your installation space and delivery path before ordering. Inspect the packaging and aquarium upon arrival. Note visible damage on the delivery receipt before signing, take clear photos, and contact us promptly. Keep the packaging until you have inspected the aquarium and cabinet.
Questions before ordering? Email info@infinityandbeyondaquatics.com.