Help me choose
A stronger Pool Express option
Dolphin Nautilus EON 120d and Polaris 9300 Sport Pool Cleaner F9300 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
EON
Dolphin Nautilus EON 120d
Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with the least filter maintenance.
Polaris
Polaris 9300 Sport Pool Cleaner F9300
Pools that need floor cleaning.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Nautilus EON 120d or Polaris 9300 Sport Pool Cleaner F9300: our take
Dolphin Nautilus EON 120d and Polaris 9300 Sport Pool Cleaner F9300 are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Dolphin Nautilus EON 120d has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Dolphin Nautilus EON 120d cleans floor, walls, and waterline; Polaris 9300 Sport Pool Cleaner F9300 cleans floor. Dolphin Nautilus EON 120d's documented cleaning system includes 2 active brushes and SmartMap navigation.
Filtration and debris
Dolphin Nautilus EON 120d has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. That gives Dolphin Nautilus EON 120d the clearer documented edge for fine silt, pollen and sand. Dolphin Nautilus EON 120d also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Nautilus EON 120d provides a weekly timer and smartphone control; Polaris 9300 Sport Pool Cleaner F9300 provides daily scheduling. Dolphin Nautilus EON 120d uses cordless battery power, while Polaris 9300 Sport Pool Cleaner F9300 uses a 60 ft corded cable. Dolphin Nautilus EON 120d is listed at 24.3 lb versus 18 lb for Polaris 9300 Sport Pool Cleaner F9300; that 6.300000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Nautilus EON 120d is listed at $1,199 and Polaris 9300 Sport Pool Cleaner F9300 at $1,393.60; Dolphin Nautilus EON 120d is $194.60 less. Dolphin Nautilus EON 120d and Polaris 9300 Sport Pool Cleaner F9300 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Nautilus EON 120d | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | YesEdge | No |
| Automatic scheduling | Yes | Yes |
| Smartphone app | Yes | Not listed |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | Not listed |
| No recharging between cycles | No | YesEdge |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Nautilus EON 120d stands out
Dolphin Nautilus EON 120d is the better fit for shoppers prioritizing the lower $1,199 starting price.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Includes a large-debris bin or bag for leaves
- Can start on a weekly schedule without a manual launch before every cycle
Where Polaris 9300 Sport Pool Cleaner F9300 stands out
Polaris 9300 Sport Pool Cleaner F9300 is the better fit for pools that need floor cleaning.
- Runs from continuous plug-in power without a recharge between cycles
- Weighs 18 lb versus 24.3 lb
Dolphin Nautilus EON 120d vs Polaris 9300 Sport Pool Cleaner F9300 specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Nautilus EON 120d | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with the least filter maintenance. | Pools that need floor cleaning. |
| Starting price | $1,199 | $1,393.60 |
| Pool type | Inground, Above-ground | Not listed |
| Maximum pool length | Up to 50 ft | Not listed |
| Cleaning coverage | Floor, Walls, Waterline | Floor |
| Power | Cordless | Corded |
| Filtration | Basket, UltraFilter | Not listed |
| Scheduling | Weekly schedule + app | Daily schedule |
| App and remote | App control | Not listed |
| Cable | Cordless | 60 ft |
| Robot weight | 24.3 lb | 18 lb |
| Warranty | 1 years | Not listed |
Consider the stronger Pool Express option
Dolphin Nautilus EON 120d and Polaris 9300 Sport Pool Cleaner F9300 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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