Main trade-off
Dolphin Nautilus CC
It does not clean the waterline.
Head-to-head
Dolphin Nautilus CC vs Advantage Ultra: Ultra adds waterline cleaning and a 50-foot pool rating
The short answer
Nautilus CC is lighter for a pool within 33 feet. Advantage Ultra adds waterline coverage, a swivel and a weekly timer for pools rated up to 50 feet.
Before you choose
The reasoning and the trade-offs
Ultra extends the rated length by about 52 percent
Its 50-foot limit is 17 feet beyond CC.
What this is based on
50 minus 33 equals 17. Divide by 33 for 51.5 percent. This compares pool limits, not cable length.
Main trade-off
Dolphin Advantage Ultra
It has no app or remote steering.
Dolphin Nautilus CC
- Choose it for
- Your pool is within 33 feet and waterline scrubbing is not required.
- Lower lifting weight matters.
- Main trade-off
- It does not clean the waterline.
Dolphin Advantage Ultra
- Choose it for
- You need waterline coverage or the larger pool-length rating.
- You want the documented weekly timer and swivel cable.
- Main trade-off
- It has no app or remote steering.
About this comparison
Compare exact Dolphin Nautilus CC and Advantage Ultra models for waterline coverage, pool length, dry weight and scheduling before choosing a corded cleaner.
Winner by situation
Start with what you need it to do
Need waterline scrubbing
Ultra includes it.
- Dolphin Nautilus CC
- Caution
- Dolphin Advantage Ultra
- Better fit
Pool length exceeds 33 feet and is no more than 50 feet
Ultra rates up to 50 feet.
- Dolphin Nautilus CC
- Not suitable
- Dolphin Advantage Ultra
- Better fit
Need lower dry lifting weight
CC is about 3.7 pounds lighter.
- Dolphin Nautilus CC
- Better fit
- Dolphin Advantage Ultra
- Good
Want weekly timer operation
Ultra lists a timer.
- Dolphin Nautilus CC
- Caution
- Dolphin Advantage Ultra
- Better fit
What matters in practice
The differences that matter
Ultra extends the rated length by about 52 percent
Its 50-foot limit is 17 feet beyond CC.
How we reached this conclusion
50 minus 33 equals 17. Divide by 33 for 51.5 percent. This compares pool limits, not cable length.
CC reduces the dry lift by about 3.7 pounds
Ultra is about 25 percent heavier dry.
How we reached this conclusion
18.478 minus 14.796 equals 3.682 pounds. Divide by 14.796 for 24.9 percent.
The same two-hour cycle does not mean the same work scope
Ultra includes waterline coverage within its documented cycle.
How we reached this conclusion
Both list two-hour default cycles. CC lists floor and walls, while Ultra adds the waterline.
Choice A
Dolphin, 99996113-USB
Nautilus CC
A compact corded Dolphin that adds wall climbing without becoming heavy or complicated.
- Best matched use
- Small in-ground pools that need floor and wall cleaning from an easy-to-lift robot
Checked facts
- Maytronics rates exact model 99996113-USB for pools up to 33 feet.
- Its two-hour cycle covers the floor and walls.
- Current tech specs list a 14.796-pound dry weight, one brush and no weekly timer.
Choice B
Dolphin, 99996201-ADU
Advantage Ultra
A full-coverage corded cleaner with waterline scrubbing and a relatively manageable 18.5-pound body.
- Best matched use
- Buyers who want Dolphin waterline cleaning without app setup
Checked facts
- Maytronics rates it for pools up to 50 feet.
- The two-hour cycle covers the floor, walls and waterline.
- It weighs 18.478 pounds and has a swivel cable with 4,000 GPH flow.
Meaningful differences
What changes the fit
| What changes | Dolphin Nautilus CC | Dolphin Advantage Ultra | Why it matters |
|---|---|---|---|
| Pool length | Up to 33 feet | Up to 50 feet | Ultra adds 17 feet to the rated pool-length limit. |
| Coverage | Floor and walls | Floor, walls and waterline | Ultra adds waterline scrubbing. |
| Dry weight | 14.796 pounds | 18.478 pounds | CC is about 3.7 pounds lighter before retained water. |
| Weekly timer | No on current exact-model page | Yes | Ultra adds recurring scheduling. |
| Swivel and brushes | No swivel, one brush | Swivel, two brushes | Ultra has more cable-management and brush hardware. |
What you give up
Every choice has a cost
If you choose Dolphin Nautilus CC
- The exact current US model lists no app, weekly timer or automation mode.
If you choose Dolphin Advantage Ultra
- The standard two-hour cycle offers less tuning than the Supreme.
Recommendation switch
The decision flips if...
You want full-zone coverage with app control
Choose neither. Advantage Pro adds MyDolphin Plus control to a 50-foot full-zone platform.
What matters in practice
How to make the call
For a compact pool and frequent carrying
CC lower dry weight is a practical advantage if the cleaner is carried between a shed and the water. Retained water and debris add to the real lift. Let it drain as directed and judge the handling position, not just the dry specification.
For a waterline ring
Ultra adds the zone that CC explicitly does not clean. That is a more useful upgrade reason than expecting faster work, because both list a two-hour default cycle. Surface conditions and geometry can still affect where the robot climbs.
For automatic scheduling
Current exact-model CC specifications list no weekly timer, while Ultra lists one. Older retailer descriptions may refer to another revision. Confirm the model number and power-supply controls in the offer before buying specifically for recurring operation.
What this comparison cannot tell you
- Manufacturer flow, runtime and coverage figures are not matched independent pool-cleaning tests.
- Wall climbing, steps and waterline performance depend on pool geometry and surface conditions. App support does not establish live underwater radio control.
What the facts say
What the comparison shows
Useful conclusions from the current robot pool cleaners comparison, followed by the checked facts used to reach them.
Compared set
None of the 27 models checked covers every part of “I need a lighter robot for the poolside lift”, “The waterline needs regular scrubbing”, “My pool is large or close to 50 feet”, and “I want recurring cleaning on a schedule”, so the recommendation favors the closest practical compromise.
0 matching models from 27 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “I need a lighter robot for the poolside lift”, “The waterline needs regular scrubbing”, “My pool is large or close to 50 feet”, and “I want recurring cleaning on a schedule”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Dolphin Nautilus CC |
|
| |
| Dolphin Advantage Ultra |
|
|
Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Dolphin Nautilus CC
Your pool is within 33 feet and waterline scrubbing is not required.
See price & reviews on AmazonDolphin Advantage Ultra
You need waterline coverage or the larger pool-length rating.
See price & reviews on AmazonLinks open in a new tab.