Help me choose
A stronger Pool Express option
Dolphin Active 40 and Dolphin Explorer E25 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.
Active
Dolphin Active 40
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Explorer
Dolphin Explorer E25
Inground pools up to 50 ft that need floor and wall 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 Active 40 or Dolphin Explorer E25: our take
Dolphin Active 40 and Dolphin Explorer E25 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
Both robots are intended for inground pools. Both are rated for pools up to 50 ft. Dolphin Active 40 cleans floor, walls, and waterline; Dolphin Explorer E25 cleans floor and walls. Dolphin Active 40's documented cleaning system includes 1 active brush and CleverClean navigation.
Filtration and debris
Dolphin Active 40 has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. That gives Dolphin Active 40 the clearer documented edge for fine silt, pollen and sand. Dolphin Active 40 also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Active 40 provides a weekly timer and smartphone control; Dolphin Explorer E25 provides smartphone control.
Price, warranty and the decision
Dolphin Active 40 is listed at $1,799 and Dolphin Explorer E25 at $899; Dolphin Explorer E25 is $900 less. Each lists a 2-year manufacturer warranty. Dolphin Active 40 and Dolphin Explorer E25 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 Active 40 | Dolphin Explorer E25 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | YesEdge | No |
| Automatic scheduling | Yes | Not listed |
| Smartphone app | Yes | Yes |
| Anti-tangle swivel | Yes | Not listed |
| 3-year warranty | No | No |
| No recharging between cycles | Yes | Not listed |
| 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 Active 40 stands out
Dolphin Active 40 is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- 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
Where Dolphin Explorer E25 stands out
Dolphin Explorer E25 is the better fit for shoppers prioritizing the lower $899 starting price.
- Is listed $900 lower
- Cleans floor and walls
Dolphin Active 40 vs Dolphin Explorer E25 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 Active 40 | Dolphin Explorer E25 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Inground pools up to 50 ft that need floor and wall cleaning. |
| Starting price | $1,799 | $899 |
| Pool type | Inground | Inground |
| Maximum pool length | Up to 50 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls |
| Power | Corded | Not listed |
| Filtration | Basket, UltraFilter | Not listed |
| Scheduling | Weekly schedule + app | Not listed |
| App and remote | App control | App control |
| Cable | 60 ft with anti-tangle swivel | Not listed |
| Robot weight | Not listed | Not listed |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Active 40 and Dolphin Explorer E25 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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