
Dolphin Advantage Ultra
Score: 73/100
Pool Blaster CX-300
Score: 80/100Rankings

The Pool Blaster CX-300 is a cordless robotic cleaner with strong suction and wall-climbing ability, ideal for pools up to 150 m². Its heavier weight and occasional runtime reductions are notable trade-offs. Best for homeowners who prioritize cordless convenience and robust cleaning over ultra-light portability.

The Dolphin Advantage Ultra offers solid floor, wall, and waterline cleaning with a lightweight, plug-and-play design and 4,000 GPH suction. It lacks advanced filtration and smart app features, limiting its appeal to tech-savvy users. Ideal for pools up to 50 ft seeking simplicity and ease of handling.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 120 minutesbest | |
| ↓ lower better | 8.39 kg | 7.805 kgbest |
— | 3best | |
— | 2 yearsbest | |
— | 1 itemsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Design(2) | ||
Weight (kg) | 8.39 kg | 7.805 kg |
Dimensions (L×W×H) | 56.4×44.7×32.5 cm | Width: 250.2 mm, Height: 384.2 mm, Length: 352.0 mm |

Products in the top-left offer the best value (high score, low price).

Professional reviewers consider the Advantage ULTRA a solid, mid-price option that delivers reliable floor, wall, and waterline cleaning while remaining lightweight and easy to service. They commend its plug-and-play simplicity and effective dual-brush system, but consistently note the missing NanoFilter technology and limited suction as drawbacks compared with higher-end Dolphin models.

Professional reviewers and the manufacturer stress the high efficiency of the CX-300, noting its powerful 7,200 gal/hr suction, cordless low-power operation, and wall-climbing navigation as standout features. However, experts caution that warranty details are inconsistently presented and the unit's weight may be a drawback compared with lighter rivals.


Everyday users generally praise the cordless convenience, strong suction, and wall-climbing capability, especially for sandy or silty pools. Recurring themes include appreciation for the fine-mesh filter and the retrieval hook, while common complaints focus on the robot's heavy weight and occasional runtime reduction in heavily soiled water.