Help me choose
A stronger Pool Express option
Dolphin Explorer E25 and Dolphin Liberty 300 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.
Explorer
Dolphin Explorer E25
Inground pools up to 50 ft that need floor and wall cleaning.
Liberty
Dolphin Liberty 300
Inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord.
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 Explorer E25 or Dolphin Liberty 300: our take
Dolphin Explorer E25 and Dolphin Liberty 300 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 Explorer E25 is intended for inground pools, while Dolphin Liberty 300 is intended for inground and above-ground pools. Dolphin Explorer E25 has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor and walls, so coverage alone does not separate them. Dolphin Liberty 300's documented cleaning system includes Dual DC motors.
Filtration and debris
Dolphin Liberty 300 has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. Dolphin Liberty 300 has the clearer documented edge for fine silt, pollen and sand. Dolphin Liberty 300 has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Explorer E25 provides smartphone control; Dolphin Liberty 300 provides no fully published timer, app or remote specification.
Price, warranty and the decision
Dolphin Explorer E25 is listed at $899 and Dolphin Liberty 300 at $1,099; Dolphin Explorer E25 is $200 less. Each lists a 2-year manufacturer warranty. Dolphin Explorer E25 and Dolphin Liberty 300 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 Explorer E25 | Dolphin Liberty 300 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | Not listed | Not listed |
| Smartphone app | Yes | Not listed |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | No |
| No recharging between cycles | Not listed | No |
| 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 Explorer E25 stands out
Dolphin Explorer E25 is the better fit for shoppers prioritizing the lower $899 starting price.
- Has documented smartphone control
- Is listed $200 lower
Where Dolphin Liberty 300 stands out
Dolphin Liberty 300 is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Includes filtration for sand, pollen and other fine debris
- Includes a large-debris bin or bag for leaves
Dolphin Explorer E25 vs Dolphin Liberty 300 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 Explorer E25 | Dolphin Liberty 300 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor and wall cleaning. | Inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord. |
| Starting price | $899 | $1,099 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Not listed |
| Cleaning coverage | Floor, Walls | Floor, Walls |
| Power | Not listed | Cordless |
| Filtration | Not listed | Basket, UltraFilter |
| Scheduling | Not listed | Not listed |
| App and remote | App control | Not listed |
| Cable | Not listed | Cordless |
| Robot weight | Not listed | Not listed |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Explorer E25 and Dolphin Liberty 300 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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