Help me choose
A stronger Pool Express option
Dolphin Proteus DX5i and Dolphin S2000 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.
Proteus
Dolphin Proteus DX5i
Inground pools up to 50 ft that need floor, wall and waterline cleaning.
S-Line
Dolphin S2000
Inground and above-ground pools up to 40 ft with steps or a sun ledge that need full-coverage cleaning on a schedule.
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 Proteus DX5i or Dolphin S2000: our take
Dolphin Proteus DX5i and Dolphin S2000 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 Proteus DX5i is intended for inground pools, while Dolphin S2000 is intended for inground and above-ground pools. Dolphin Proteus DX5i is rated for pools up to 50 ft; Dolphin S2000 is rated up to 40 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Proteus DX5i lists 1 active brush. Dolphin S2000 lists 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin Proteus DX5i includes Basket; Dolphin S2000 includes Basket and UltraFilter. Dolphin S2000 has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Proteus DX5i provides smartphone control; Dolphin S2000 provides a weekly timer and smartphone control. Dolphin Proteus DX5i uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin S2000 uses continuous corded power.
Price, warranty and the decision
Dolphin Proteus DX5i is listed at $1,299 and Dolphin S2000 at $1,199; Dolphin S2000 is $100 less. Each lists a 2-year manufacturer warranty. Dolphin Proteus DX5i and Dolphin S2000 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 Proteus DX5i | Dolphin S2000 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Yes | Yes |
| Anti-tangle swivel | Yes | Yes |
| 3-year warranty | No | No |
| No recharging between cycles | Yes | Yes |
| 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 Proteus DX5i stands out
Dolphin Proteus DX5i is the better fit for pools up to 50 ft.
- Is rated for pools up to 50 ft
- Cleans floor, walls and waterline
Where Dolphin S2000 stands out
Dolphin S2000 is the better fit for shoppers prioritizing the lower $1,199 starting price.
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Is listed $100 lower
Dolphin Proteus DX5i vs Dolphin S2000 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 Proteus DX5i | Dolphin S2000 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning. | Inground and above-ground pools up to 40 ft with steps or a sun ledge that need full-coverage cleaning on a schedule. |
| Starting price | $1,299 | $1,199 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 40 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | Not listed | Weekly schedule + app |
| App and remote | App control | App control |
| Cable | 60 ft with anti-tangle swivel | Not listed |
| Robot weight | Not listed | 17.9 lb |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Proteus DX5i and Dolphin S2000 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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