The catch
Dolphin Nautilus CC
The waterline is not part of its job.
Side by side
Dolphin Nautilus CC vs Advantage Ultra: Waterline cleaning and a 50-foot pool rating come with Ultra
Quick verdict
For a pool within 33 feet, the Nautilus CC is the lighter option. The Advantage Ultra brings waterline coverage, a swivel and a weekly timer to pools rated up to 50 feet.
Before you buy
Why, and what it costs you
Rated length goes up about 52 percent with Ultra
The 50-foot limit reaches 17 feet past CC.
Where this comes from
Subtract 33 from 50 for 17, then divide by 33 for 51.5 percent. Pool limits are compared here. Cable length is left out.
The catch
Dolphin Advantage Ultra
App and remote steering are both absent.
Dolphin Nautilus CC
- Why pick it
- You can do without waterline scrubbing and your pool stays within 33 feet.
- Less weight to lift is important.
- The catch
- The waterline is not part of its job.
Dolphin Advantage Ultra
- Why pick it
- Waterline coverage or the larger pool-length rating is what you need.
- The documented weekly timer and swivel cable appeal to you.
- The catch
- App and remote steering are both absent.
We may earn a commission from qualifying Amazon purchases. How we make money
What this page compares
Before you pick a corded cleaner, see how the exact Dolphin Nautilus CC and Advantage Ultra models differ on waterline coverage, pool length, dry weight and scheduling.
Which one fits
Pick the situations that sound like you
Waterline scrubbing is needed
The Ultra has it.
- Dolphin Nautilus CC
- Caution
- Dolphin Advantage Ultra
- Better fit
Pool length over 33 feet and at most 50 feet
Ultra is rated up to 50 feet.
- Dolphin Nautilus CC
- Not suitable
- Dolphin Advantage Ultra
- Better fit
A lower dry weight to lift is needed
CC weighs about 3.7 pounds less.
- Dolphin Nautilus CC
- Better fit
- Dolphin Advantage Ultra
- Good
Weekly timer operation is wanted
Ultra has a timer listed.
- Dolphin Nautilus CC
- Caution
- Dolphin Advantage Ultra
- Better fit
In practice
Differences you will notice
Rated length goes up about 52 percent with Ultra
The 50-foot limit reaches 17 feet past CC.
How we worked this out
Subtract 33 from 50 for 17, then divide by 33 for 51.5 percent. Pool limits are compared here. Cable length is left out.
With CC the dry lift is about 3.7 pounds lighter
Dry, Ultra weighs about 25 percent more.
How we worked this out
Take 14.796 from 18.478 to get 3.682 pounds. Dividing by 14.796 gives 24.9 percent.
Matching two-hour cycles do not make the work scope the same
The waterline is covered in Ultra's documented cycle.
How we worked this out
Default cycles are two hours on both. The CC listing is floor and walls, and Ultra adds the waterline on top.
Option A
Dolphin, 99996113-USB
Nautilus CC
This compact corded Dolphin climbs walls and still stays light and uncomplicated.
- Best for
- A small in-ground pool where you want the floor and walls cleaned by a robot that is easy to lift
Facts we checked
- For pools up to 33 feet, Maytronics rates the exact model 99996113-USB.
- A two-hour cycle takes in the floor and walls.
- Per the current tech specs: one brush, no weekly timer and a 14.796-pound dry weight.
Option B
Dolphin, 99996201-ADU
Advantage Ultra
This corded cleaner covers every zone, waterline scrubbing included, in a fairly manageable 18.5-pound body.
- Best for
- Anyone who wants a Dolphin that cleans the waterline and skips app setup
Facts we checked
- Maytronics' rating covers pools up to 50 feet.
- Floor, walls and waterline are all covered in the two-hour cycle.
- Flow is 4,000 GPH, the cable swivels and the weight is 18.478 pounds.
Spec by spec
Where they really differ
| Spec | Dolphin Nautilus CC | Dolphin Advantage Ultra | In practice |
|---|---|---|---|
| Pool length | Up to 33 feet | Up to 50 feet | Ultra extends the rated pool-length limit by 17 feet. |
| Coverage | Floor and walls | Floor, walls and waterline | Waterline scrubbing comes with Ultra. |
| Dry weight | 14.796 pounds | 18.478 pounds | Before any retained water, CC weighs about 3.7 pounds less. |
| Weekly timer | No on current exact-model page | Yes | Recurring scheduling is added by Ultra. |
| Swivel and brushes | No swivel, one brush | Swivel, two brushes | Ultra has extra hardware for cable management and brushes. |
Trade-offs
What each pick costs you
With Dolphin Nautilus CC
- No app, weekly timer or automation mode appears in the listing for the exact current US model.
With Dolphin Advantage Ultra
- Compared with the Supreme, the standard two-hour cycle gives you less to adjust.
Change of plan
When the answer changes
You want app control on top of full-zone coverage
Neither model fits. A 50-foot full-zone platform gets MyDolphin Plus control with Advantage Pro.
Decision guide
How to decide
Pick Nautilus CC for lighter weight when your pool is within 33 feet. Pick Advantage Ultra when you want waterline coverage, a swivel and a weekly timer, for pools rated up to 50 feet.
For a small pool and lots of carrying
If the cleaner gets carried between a shed and the water, the CC's lower dry weight is a practical advantage. Retained water and debris make the real lift heavier. Let it drain as directed, and judge the handling position rather than only the dry specification.
On a waterline ring
The Ultra covers the zone the CC explicitly does not clean. That is a better reason to upgrade than expecting faster work, since both list a two-hour default cycle. Surface conditions and geometry can still affect where the robot climbs.
On automatic scheduling
The current exact-model specifications for the CC show no weekly timer, whereas the Ultra has one listed. Older retailer descriptions may be about a different revision. If recurring operation is your reason for buying, confirm the model number and power-supply controls in the offer first.
What this page can’t tell you
- The flow, runtime and coverage figures come from the manufacturer and are not matched, independent pool-cleaning tests.
- How well a robot climbs walls, handles steps and cleans the waterline depends on pool geometry and surface conditions. Having an app does not mean you get live underwater radio control.
By the numbers
What the data shows
What we found across the robot pool cleaners we compare, plus the checked facts behind each finding.
How many fit
None of the 27 models checked meets all of “I need a robot light enough for the lift at poolside”, “Regular scrubbing is needed at the waterline”, “My pool is large or nearly 50 feet”, and “I want it to clean on a repeating schedule”, so the pick goes to the closest practical compromise.
0 models fit, out of 27 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “I need a robot light enough for the lift at poolside”, “Regular scrubbing is needed at the waterline”, “My pool is large or nearly 50 feet”, and “I want it to clean on a repeating schedule”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Dolphin Nautilus CC |
|
| |
| Dolphin Advantage Ultra |
|
|
Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Dolphin Nautilus CC
You can do without waterline scrubbing and your pool stays within 33 feet.
See price & reviews on AmazonDolphin Advantage Ultra
Waterline coverage or the larger pool-length rating is what you need.
See price & reviews on AmazonEach link opens in a new tab.
We may earn a commission from qualifying Amazon purchases. How we make money