Dolphin Nautilus CC Plus
Best for big pools — A corded robotic pool cleaner for big pools (up to ~50 ft) that runs as long as you need with no battery and proven, owner-loved reliability — the trade-offs are managing a floating cord and flaky Wi-Fi
Contender — The Best Robotic Pool Cleaners of 2026: Cordless vs. Corded, Compared
⚔️ Matchup — Dolphin Nautilus CC Plus vs Aiper Scuba S1
Specs
| Filtration | Ultra-fine filters (µm not published) |
| Surfaces | All surfaces incl. vinyl (active scrubbing) |
Filtration is rated in microns (µm — millionths of a meter): the smallest particle the filter reliably traps, so a lower number is a finer filter. A human hair is ~70 µm; ultra-fine (~3–10 µm) catches the silt and dead algae that make water hazy. "µm not published" means the maker states no number — which is information in itself.
Pros
- Runs as long as you need — no battery
- Proven, owner-loved reliability
- Great for large pools
Cons
- You manage a floating cord
- Doesn't always hit the waterline as aggressively as top cordless models
- Owners report flaky Wi-Fi/app connectivity — the main drag on its 3.6★ rating
“It's been reliable in over a year of ownership, with few issues.”— The Pool Nerd
Pro review “The Dolphin Nautilus CC Plus does a solid job for basic floor and bottom-of-wall cleaning.”— Brian Williamson, Pool Express
✓ Safety: no active recall — Corded — no onboard lithium battery, so none of the charging-fire risk of cordless robots. No active CPSC recall found (checked Jun 2026).
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Data last verified: July 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.