When it comes to robotic pool cleaners that deliver reliable performance for in-ground pools, two names consistently rise to the top: the Dolphin Nautilus CC vs Dolphin Quantum. Manufactured by Maytronics, both models cater to homeowners seeking effective, automated cleaning solutions.
While the Nautilus CC is praised for its affordability and straightforward operation, the Quantum offers a more premium experience with advanced navigation, improved mobility, and superior filtration. In this detailed comparison, we evaluate each cleaner across critical categories to help pool owners choose the best model based on their specific needs and pool environment.
Contents
Differences Between Dolphin Nautilus CC vs Dolphin Quantum
Below is a summary of the specifications:
Pool Compatibility and Cleaning Reach
The Dolphin Nautilus CC is built for in-ground pools up to 33 feet. It offers solid cleaning coverage across both the pool floor and walls, providing consistent results for small to medium-sized pools. While the Nautilus CC climbs vertical surfaces effectively, it does not clean the waterline, which may lead to residue buildup along the tile line over time.
In contrast, the Dolphin Quantum is engineered for larger pools up to 50 feet, and it delivers comprehensive cleaning that covers floor, walls, and waterline. The Quantum is designed for deeper cleaning in more complex pool layouts, and its enhanced mobility allows it to reach tight corners and maintain consistent pressure at the waterline, where oils, pollen, and scum tend to accumulate.
Winner: Dolphin Quantum
With full-surface coverage and the ability to clean the waterline, the Quantum provides a more thorough clean for a wider range of pool sizes.
The Nautilus CC utilizes CleverClean™ Technology, an intelligent mapping algorithm that scans the pool and creates an optimized cleaning path. It avoids obstacles and ensures comprehensive floor and wall coverage, completing its cycle efficiently within two hours.
The Quantum, however, incorporates SmartNav™ 2.0 paired with a gyroscopic control system. This setup provides advanced orientation awareness, allowing the robot to make real-time adjustments to its path and maintain steady vertical alignment. The Quantum adapts dynamically to the pool’s shape and layout, improving efficiency and reducing missed spots, especially near edges or irregular structures.
Winner: Dolphin Quantum
With enhanced gyroscopic navigation and smarter pathing, the Quantum is better suited for consistent, full-pool coverage without unnecessary overlap.

Scrubbing Technology and Debris Removal
The Nautilus CC features dual high-speed brushes, which provide effective scrubbing for loosening debris, algae, and buildup from the floor and walls. The brushes rotate quickly to agitate contaminants, making the Nautilus CC highly capable of handling routine cleaning tasks.
The Quantum raises the bar with its dual HyperBrush™ scrubbing rollers. These brushes spin twice the speed of standard models, offering deeper penetration into tough debris and scaling. The added power is particularly beneficial for pools with heavy organic material or textured surfaces like gunite and pebble finishes.
Winner: Dolphin Quantum
With more aggressive brush action and greater contact pressure, the Quantum excels at deep cleaning even in more demanding environments.
Filtration System and Debris Handling Capacity
The Nautilus CC uses a top-load fine filter cartridge, which efficiently captures medium-sized debris such as dirt, small leaves, and insects. While effective for most day-to-day use, the fine filter may struggle with ultra-fine particles like sand, silt, or pollen, unless upgraded with aftermarket cartridges.
The Quantum features an oversized top-load basket with dual-layer filtration—including fine and ultra-fine mesh that captures both large and microscopic debris. Its larger capacity significantly reduces the need for frequent filter rinsing, making it ideal for leafy environments, storm cleanup, or pools exposed to heavy dust and debris.
Winner: Dolphin Quantum
With higher capacity and finer filtration built in, the Quantum ensures cleaner water and more convenient maintenance.
Mobility System and Wall Climbing Ability
The Nautilus CC relies on standard wheels for movement, which work well on smooth pool surfaces and enable the unit to climb walls. However, the absence of treaded tracks can limit traction on slick surfaces or sharp inclines, especially in tiled or fiberglass pools.
The Quantum incorporates HyperGrip™ continuous tracks, which significantly improve surface traction and stability. These tracks allow the robot to maintain consistent contact during vertical climbs and waterline scrubbing, even in challenging conditions or on irregular surfaces.
Winner: Dolphin Quantum
Track-based mobility offers superior grip, smoother transitions, and more effective wall and waterline performance.
Cable Design and Tangle Prevention
The Nautilus CC is equipped with a 50-foot floating cable. While sufficient for pools up to 33 feet, the cable lacks a swivel mechanism, which can lead to coiling and tangling over time. This requires manual straightening between cycles and may reduce cleaning efficiency if left unaddressed.
The Quantum features a 60-foot anti-tangle swivel cable, engineered to rotate with the robot’s movements and prevent cable twists. This enables longer, uninterrupted cycles in larger or freeform pools and reduces the need for manual cable management.
Winner: Dolphin Quantum
The swivel cable enhances usability and ensures continuous cleaning without the frustration of tangled cords.

Scheduling and Automation Features
The Nautilus CC does not include a built-in scheduler or app control. Users must manually start the cleaner for each cycle using the physical power supply. While this simplicity appeals to those looking for no-fuss operation, it lacks automation for regular maintenance.
The Quantum, on the other hand, includes a programmable weekly scheduler, allowing owners to set automatic cleanings for daily, every other day, or every three days. This feature adds true hands-free maintenance, keeping the pool clean without user intervention.
Winner: Dolphin Quantum
Its built-in scheduling enables a more automated and consistent cleaning experience, ideal for busy pool owners.
Ease of Handling and Maintenance
At 13.8 lbs, the Nautilus CC is compact and lightweight. It’s easy to lift from the pool and empty the filter tray, making it an excellent choice for users seeking minimal effort in daily pool maintenance.
The Quantum weighs 27 lbs, nearly double that of the Nautilus CC. This weight results from its enhanced motors, larger filters, and track system. While still manageable, removing it from the pool requires more effort, especially when the filter basket is full.
Winner: Dolphin Nautilus CC
With its lighter frame and simpler handling, the Nautilus CC is more convenient for everyday pool maintenance tasks.
Quick Rundown Of Dolphin Nautilus CC
Quick Rundown Of Dolphin Quantum
Conclusion
Choose Dolphin Nautilus CC if you want a lightweight, easy-to-use robotic cleaner for small to medium in-ground pools that offers dependable cleaning of floors and walls. It’s ideal for homeowners seeking simplicity and affordability, with enough power to handle most common debris types.
Choose Dolphin Quantum if you need a comprehensive, high-performance cleaner that can manage larger pools, provide waterline scrubbing, and deliver deeper filtration. Its advanced mobility, intelligent pathing, and automated scheduling make it a top-tier solution for demanding cleaning tasks.
Overall Winner: Dolphin Quantum
With superior scrubbing, better filtration, waterline capability, and advanced features, the Dolphin Quantum stands out as the more powerful and versatile robotic cleaner—perfect for pool owners seeking premium performance with minimal maintenance.