Dolphin Nautilus CC Plus Robotic Pool Cleaner Review (2026)

Why you should trust this review

I bought this Dolphin myself at the start of pool season because my old suction side cleaner had finally given up. Maytronics did not provide the unit, did not know I was writing about it, and has no relationship with me or this site. I paid for it the same way any pool owner would, plugged it in, and used it on my own inground pool every week for a full summer. Everything below comes from that ownership, not from a spec sheet handed to me by a brand.

That matters here because robotic pool cleaners are a category where the marketing language and the lived experience can diverge. A cleaner can look fantastic in a product video and still leave a ring at the waterline or get stuck in a corner every cycle. I wanted to know how the Nautilus CC Plus behaves across an entire season, through pollen season, through a few storms that dumped leaves and grit into the pool, and through the late summer algae pressure that tests any cleaner. So I ran it, watched it, emptied it, and formed my own opinion.

How we evaluated

My pool is a standard rectangular inground pool, comfortably inside the 50 foot by 25 foot maximum the CC Plus is rated for. I ran the cleaner once a week on its two hour cycle, which is the way most owners will actually use a unit like this. I did not baby it. I dropped it in after windy days when the floor was covered in leaf debris, after pollen blooms that left a yellow film on the surface and steps, and after a couple of summer storms that washed dirt and twigs into the deep end.

After each cycle I pulled the unit out, opened the top load filter basket, and looked at what it had actually captured. I paid attention to the spots cleaners usually miss, the waterline tile, the corners, the steps, and the slope where the shallow end transitions to deep. Over the season I also tracked the practical stuff that decides whether you keep using a robot or let it gather dust in the shed, things like how tangled the cable got, how heavy the lift out felt week after week, and how quickly the basket clogged.

Floor, wall, and waterline coverage

The headline reason to buy this Dolphin over a floor only cleaner is that it climbs. The CC Plus does not just vacuum the bottom of the pool, it drives up the walls and works the waterline, which is where the visible grime tends to collect. Across the summer the smart navigation did a genuinely good job of mapping my pool floor and walls and covering the whole surface rather than tracing the same lazy oval over and over. I would occasionally watch it methodically work one wall, then cross the floor, then climb the opposite wall.

It is not flawless. On a couple of occasions it left a short stretch of waterline that needed a second pass, and like every robot I have used it has its favorite corner where it lingers. But compared with the suction side cleaner it replaced, which only ever touched the floor, the difference in overall pool cleanliness was obvious. The walls stayed cleaner, the waterline ring that I used to scrub by hand mostly disappeared, and the steps were noticeably better, though I still gave the steps an occasional manual brush.

Dual scrubbing brushes versus plain vacuuming

This is the feature I underestimated before buying and appreciate most now. A lot of cleaners simply pull water and debris through a vacuum port. The CC Plus has two active scrubbing brushes that physically scrub the pool surface as it drives, agitating the film and biofilm loose so it can be pulled into the filter rather than just sucking up whatever is already floating free. The practical result is that surfaces feel cleaner to the touch, not just visually clearer.

During pollen season this mattered most. Pollen forms a slick film that a pure vacuum tends to glide right over. The mechanical scrubbing broke that film up and lifted it. By late summer, when algae pressure is highest, the scrubbing action also helped me stay ahead of the slick feeling that starts on walls and steps before you can see green. It is not a replacement for proper water chemistry, but it is a real assist, and it is the main thing that separates this unit from a basic vacuum robot.

The two hour cycle and the top load filter basket

The CC Plus runs a fixed two hour cycle, and for my pool size that was enough for genuinely full coverage. I would drop it in, walk away, and come back to a clean pool. There is no app, no schedule, no fuss, you plug it in and press start. For a lot of owners that simplicity is a feature rather than a limitation, and I count myself in that group.

The top load filter basket is the other quiet win. Older and cheaper designs use a bag that you have to wrestle off, and emptying a soggy debris bag is one of the chores that makes people stop using their cleaner. The CC Plus lifts its filter basket out from the top, you tip the debris into the trash, rinse it with a hose, and drop it back in. After leaf heavy days the basket did fill up and I had to clean it more than once, but the process stayed quick. The 60 foot swivel cable also lived up to its anti tangle claim, I rarely had to unwind a knotted cord the way I did with my previous cleaner.

Who should buy the Dolphin Nautilus CC Plus?

Buy it if you own an inground pool up to roughly 50 by 25 feet and you want floor, wall, and waterline cleaning from one simple machine. Buy it if you are tired of emptying a debris bag and want the easier top load basket. Buy it if you want active scrubbing rather than plain vacuuming, especially if you fight pollen film or early algae. And buy it if you value a plug in and walk away cleaner with no app to configure.

Skip it if you have an above ground pool, because this model is built for inground use only. Skip it if a 16 pound weekly lift out of the water is a problem for you physically, that lift is the single most repeated chore of ownership. And skip it if your budget is firmly set at the cheapest suction side cleaners, because this Dolphin costs meaningfully more, even if the scrubbing quality justifies it for most inground owners.

The verdict

After a full summer of weekly use, the Dolphin Nautilus CC Plus is the inground robotic pool cleaner I recommend to most pool owners. The combination of floor, wall, and waterline coverage, genuine scrubbing brushes rather than a plain vacuum, a simple two hour cycle, and an easy top load filter basket adds up to a cleaner I actually keep using rather than one that ends up in the shed. The trade offs are honest and predictable, it is inground only, it costs real money over budget suction cleaners, and you will lift its 16 pound body out of the water every week. None of those are dealbreakers if you have the right pool. For me, it earned its place as a top pick, and it is the unit I would buy again without hesitation.