Nyos Opus 250 G2 Aquarium and Cabinet

★★★★★ 4.6 89 reviews

$1,999.99
Price when purchased online
Free shipping Free 30-day returns

We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
$1,999.99
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Jul 13
Free
Pickup
Check nearby
Delivery
Not available

Free 30-day returns Details

Product details

Management number 234753817 Release Date 2026/07/02 List Price $600.00 Model Number 234753817
Category

The NYOS ® OPUS ® G2 series delivers a premium, ready-to-use reef aquarium and cabinet system engineered for modern reefing. Designed to emphasize your aquascape, every detail enhances quality, functionality, and aesthetics—so nothing distracts from the reef experience.

THE NYOS ® OPUS ® G2 AQUARIUM
(OPUS ® G2 TANK)

HIDDEN OVERFLOW

An external, flush rear overflow eliminates an internal drain shaft, maximizing space for aquascaping and making the back panel easy to clean.

THREE SIDES WITH ULTRA-CLEAR GLASS

Ultra-clear front and side panes minimize green tint for brilliantly vibrant fish and coral colors.

POOL DESIGN

No cross or side braces—just open, unobstructed viewing.

CLEAR GLASS EDGES

Transparent silicone keeps the focus on the reef.

DEEP BLUE REAR WINDOW

A precisely tuned dark blue back panel creates a realistic depth effect under lighting.

OPTIMAL AQUASCAPING PROPORTIONS

Extra depth supports dynamic, layered reef structures.

THE NYOS ® OPUS ® G2 CABINET
(OPUS ® G2 CABINET)

ROBUST, SUSTAINABLE BUILD

Moisture-resistant EN 312 panels with durable melamine coating are scratch and impact resistant, with waterproof foam lining. Wood is sourced per ISO 38200 and produced in FSC ® certified facilities, incorporating recycled and co-product materials for a reduced carbon footprint.

AESTHETICS AND FUNCTION

Timeless, minimalist design with clean lines to complement any space.

Pro-Line ® highlights:

  • Distinctive cubic design with expanded storage footprint
  • Premium 125° soft-close hinges
  • Thick, solid doors and concealed sand edge for a seamless look

Slim-Line ® highlights:

  • Slim, space-saving footprint
  • Clean, minimalist appearance
  • Accessible entry into the OPUS G2 design language

THE NYOS ® OPUS ® G2 TECHNICAL TANK
(OPUS ® G2 SUMP)

CLEAR, SPACE-SAVING PVC PIPING

Durable fixed PVC plumbing installs in a few steps and ensures long-term safety.

GENEROUS MAIN CHAMBER

Accommodates skimmers, media reactors, and algae reactors at a constant water level of approx. 21 cm.

QUIET OPERATION AND SAFETY

Adjustable drain valve for noise reduction plus standard emergency overflow.

NYLON FILTER SOCK + XL ATO RESERVOIR

Long-lasting filtration and a tall refill tank that typically supplies evaporation top-off for about a week.

5-CHAMBER PRINCIPLE

1: Settling chamber

2: Filter sock

3: Main filter chamber (constant level)

4: Optional sponge/bubble trap

5: Return chamber with space for ATO sensor

Engineered for reef aquarium enthusiasts, this integrated aquarium and cabinet system unites crystal-clear viewing, thoughtful cabinet options, and a streamlined sump for reliable, quiet, and sustainable saltwater performance.

ProLine 

AQUARIUM

Aquarium dimensions (L x W x H) 70 x 55 x 53 cm
volume of aquarium (gross) 204 l
ultra-clear glass windshield and side windows
glass thickness 10 mm
Hidden overflow (no drain shaft in the aquarium) Yes

 BASE CABINET

Dimensions of base cabinet (L x W x H) 78,5 x 65,5 x 90 cm 
total height of base cabinet with aquarium 141 cm
Height-adjustable feet Yes
Sand edge and front silicone seam concealed Yes
hinges Premium 125° with soft-close
Moisture-resistant wood panels according to EN 312 Yes

 TECHNICAL POOL (OPUS ® G2 Sump)

Technical tank dimensions (L x W x H) 40 x 49.5 x 35 cm
water level technical tank approx. 21 cm
Volume of technical tank at 21 cm water level (gross) 42 l
Refill basin dimensions (LxWxH) and volume (net) 11 x 42 x 50 cm, 20 liters
Size of middle filter chamber (skimmer chamber) (LxW) 24 x 49.5 cm
Size of return chamber/chamber for return pump (LxW) 15 x 22 cm

MISCELLANEOUS

emergency procedure Yes
Recommended performance return pump 2,000 l/h
return flow adjustment valve Yes

SlimLine

AQUARIUM

Aquarium dimensions (L x W x H) 70 x 55 x 53 cm
volume of aquarium (gross) 204 l
ultra-clear glass windshield and side windows
glass thickness 10 mm
Hidden overflow (no drain shaft in the aquarium) Yes

 BASE CABINET

Dimensions of base cabinet (L x W x H) 70 x 55 x 90 cm
total height of base cabinet with aquarium 143 cm
Height-adjustable feet No
Sand edge and front silicone seam concealed No
hinges standard
Moisture-resistant wood panels according to EN 312 Yes

 TECHNICAL POOL (OPUS ® G2 Sump)

Technical tank dimensions (L x W x H) 40 x 49.5 x 35 cm
water level technical tank approx. 21 cm
Volume of technical tank at 21 cm water level (gross) 42 l
Refill basin dimensions (LxWxH) and volume (net) 11 x 42 x 50 cm, 20 liters
Size of middle filter chamber (skimmer chamber) (LxW) 24 x 49.5 cm
Size of return chamber/chamber for return pump (LxW) 15 x 22 cm

 MISCELLANEOUS

emergency procedure Yes
Recommended performance return pump 2,000 l/h
return flow adjustment valve Yes


Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

4.6 out of 5
★★★★★
89 ratings | 36 reviews
How item rating is calculated
View all reviews
5 stars
84% (75)
4 stars
3% (3)
3 stars
2% (2)
2 stars
1% (1)
1 star
10% (9)
Sort by

There are currently no written reviews for this product.