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