Blue Helix One Review

What features does it have?

The Dolphin Active 20 is a popular entry-level robot for in-ground pools, and in 2026 it's still a solid, no-frills way to keep your floor and walls clean without manual vacuuming. It covers the basics well — just know where it lands compared to Maytronics' premium models. Here's a closer look.

Wall Climbing

Clean like a pro. With wall coverage, the Dolphin Active 20 can clean and scale your walls with precision and power. While Wall Climbing is a great feature, don't get this confused with the superior waterline cleaning feature.

What is Dolphin Active 20 missing?

Waterline Cleaning

Dolphin Active 20 does not included waterline cleaning. Not only is this an essential feature that you'll want when looking for a pool robot, but one you will likely need. Waterline cleaning enables the robot to climb and reach the dirtest part of your swimming pool. Without this feature, you'll still need to manually clean your waterline by hand with a brush to prevent any algae or scum that builds up. It is one feature that you'll need that is not included with the Dolphin Active 20.

Leaf Bag

With leaves being a common issue, it would be safe to assume most pool robots utilize a leaf bag. Well, no so fast. Nearly every robotic pool cleaner is missing a leaf bag, except the Dolphin Premier. If you have a lot of leaves, this is the best pool robot for leaves. Not to mention the Premier's 3 year warranty, Dual Commercial Motors, and Multi-Media™ make it one of the best models available.

Want more power and finer filtration?

The Active 20 is a capable everyday cleaner, but it doesn't include NanoFilters or ProLine commercial-grade motors. If you want the clearest possible water and the strongest coverage — including the waterline — step up to a ProLine cleaner like the Dolphin Premier, or consider a Max-Series model for premium performance.

What's included with the Dolphin Active 20?

The Dolphin Active 20 includes everything you'll need. Here is what is included with the unit:

• Dolphin Active 20 Unit
• 60 ft Cord with Anti-Tangle Swivel
• Programmable Weekly Timer
• Standard Filters
• 2 Year Warranty

How to set up the Dolphin Active 20

Simply plug and play. All robotic pool cleaners are ready to go right out of the box. No booster pump or assembly needed. The Active 20 has everything needed to get started in its box. It's that easy.

Comparing options? For a more reliable, thorough clean read the flagship Dolphin Premier review, the Dolphin Sigma review, or the value Dolphin Cayman review.

Why Poolbots?

No one knows robotic pool cleaners better than we do. With 25+ years in the swimming pool industry and as a Dolphin Authorized Dealer, every robot we ship is backed by the full, non-prorated manufacturer's warranty — never a watered-down store warranty. Every order ships free and is covered by our 30-Day Trial with NO restocking fee, ever. Try it in your own pool risk-free, and if it isn't right, send it back with zero penalties.

Not sure whether to keep it simple or step up? Compare the best robotic pool cleaners, or reach out and our pool experts will help you pick the perfect cleaner.