The catch
ECOVACS ULTRAMARINE P1
Steps are something ECOVACS says the P1 is not designed to clean.
Side by side
ECOVACS ULTRAMARINE P1 vs WYBOT C2 Compared: C2 is rated for a slightly larger area, but P1 filters finer particles
Quick verdict
A finer 3-micron stage and faster published flow are the P1's advantages. The C2 counters with slightly more area covered and seven clearly defined cleaning modes.
Before you buy
Why, and what it costs you
Coverage: how big the gap is
The published “Coverage” figure is 11% higher on WYBOT C2: 2,152 sq ft, against 1,937 sq ft on ECOVACS ULTRAMARINE P1.
Where this comes from
Use this published coverage as a sizing limit under the stated conditions. It is not a guarantee for every layout. The percentage is worked out from the lower published figure.
The catch
WYBOT C2
Simple floor-only cordless models weigh less than its 17.6 pounds dry.
ECOVACS ULTRAMARINE P1
- Why pick it
- Fine dust that stays suspended is the issue.
- You care about navigation and planned cycles.
- The catch
- Steps are something ECOVACS says the P1 is not designed to clean.
WYBOT C2
- Why pick it
- You want the biggest rated area.
- Seven modes appeal to you.
- The catch
- Simple floor-only cordless models weigh less than its 17.6 pounds dry.
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What this page compares
Two smart cordless cleaners that both have secondary fine filters, compared.
This one comes down to coverage and fine filter first, then to the limits of your own setup.
Which one fits
Pick the situations that sound like you
I want it to clean on a repeating schedule
A recurring mode is documented, and it divides cleaning across separate visits. Before you leave it on a schedule, check the battery, floor-only, debris and maintenance limits.
- ECOVACS ULTRAMARINE P1
- Better fit
- WYBOT C2
- Depends
Regular scrubbing is needed at the waterline
The waterline is part of its documented cleaning zone.
- ECOVACS ULTRAMARINE P1
- Good
- WYBOT C2
- Better fit
The main trouble is leaves and larger debris
The intake and the debris canister leave useful room for leaves and twigs.
- ECOVACS ULTRAMARINE P1
- Depends
- WYBOT C2
- Better fit
I want to steer it to a spot it missed
Some models only respond at the surface, so check the supported mode and the connection state before you count on steering it remotely.
- ECOVACS ULTRAMARINE P1
- Depends
- WYBOT C2
- Better fit
My pool collects fine dust, sand or dead algae
ECOVACS ULTRAMARINE P1 lists “3 micron” for fine filter, while WYBOT C2 lists “10 micron”. This shows what the treatment path is designed to catch or reduce, and the upkeep it needs.
- ECOVACS ULTRAMARINE P1
- Similar
- WYBOT C2
- Similar
In practice
Differences you will notice
Coverage: how big the gap is
The published “Coverage” figure is 11% higher on WYBOT C2: 2,152 sq ft, against 1,937 sq ft on ECOVACS ULTRAMARINE P1.
How we worked this out
Use this published coverage as a sizing limit under the stated conditions. It is not a guarantee for every layout. The percentage is worked out from the lower published figure.
Where these two really part ways
ECOVACS ULTRAMARINE P1 is the better match for “I want it to clean on a repeating schedule”. WYBOT C2 is the better match for “Regular scrubbing is needed at the waterline” and “The main trouble is leaves and larger debris”.
How we worked this out
This lines up the current strong and useful fit ratings for the exact products. It does not roll them into one overall score.
These needs do not split the pair
Both meet the same 3 of the 3 needs this comparison is built around, so the choice comes down to “coverage” and “fine filter”.
How we worked this out
Both products are checked against the same needs. The first verified differences still standing are named here.
Models that handle “No cable should run across my pool” and “My pool collects fine dust, sand or dead algae”
6 of the 27 robot pool cleaners checked handle both “No cable should run across my pool” and “My pool collects fine dust, sand or dead algae”. Both make the cut.
How we worked this out
You can reproduce the count by filtering the current category for models with a strong or useful fit on both needs.
Option A
ECOVACS, P1
ULTRAMARINE P1
This cordless robot moves a lot of water, has unusually fine secondary filtration and supports planned cleaning through the app.
- Best for
- A large pool with fine silt, for owners who put a cordless robot and repeatable navigation first
Facts we checked
- A 3-micron secondary filter works with 180-micron media in the dual filter.
- Coverage reaches 1,937 square feet, and published flow is 4,800 GPH.
- Documented features are SmartNavi 2.0, app scheduling and up to 180 minutes in Eco mode.
Option B
WYBOT, 2026 Upgrade
C2
This is the widest-ranging WYBOT on the list, with a three-hour battery, seven modes and a 10-micron secondary filter.
- Best for
- Cordless cleaning of a large pool where both fine debris and flexible modes count
Facts we checked
- WYBOT's ratings are 2,152 square feet and up to 180 minutes.
- There are seven modes, covering floor, walls and waterline.
- Flow is 3,592 GPH, and the filter stack combines 180-micron and 10-micron media.
Spec by spec
Where they really differ
| Spec | ECOVACS ULTRAMARINE P1 | WYBOT C2 | In practice |
|---|---|---|---|
| Coverage | 1,937 sq ft | 2,152 sq ft | Treat this published coverage as a sizing limit under the stated conditions. It does not guarantee results in every layout. |
| Fine filter | 3 micron | 10 micron | It shows what the treatment path is built to catch or reduce, and what upkeep that requires. |
| Flow | 4,800 GPH | 3,592 GPH | Higher published output is useful only if your room, surface or workload calls for the extra headroom. It does not, by itself, prove better results. |
| Steps | Not designed for steps | No universal step guarantee | How many steps fall to you and how much happens automatically both come down to this. |
Trade-offs
What each pick costs you
With ECOVACS ULTRAMARINE P1
- Its Eco floor-cleaning mode is where the longest runtime comes from.
With WYBOT C2
- Long cycles are followed by downtime while the battery charges.
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
Only 5 of the 27 models checked meet every need here: “No cable should run across my pool”, “My pool collects fine dust, sand or dead algae”, and “I want an app for controls and status”.
5 models fit, out of 27 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “No cable should run across my pool”, “My pool collects fine dust, sand or dead algae”, and “I want an app for controls and status”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| ECOVACS ULTRAMARINE P1 |
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| WYBOT C2 |
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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.
ECOVACS ULTRAMARINE P1
Fine dust that stays suspended is the issue.
See price & reviews on AmazonWYBOT C2
You want the biggest rated area.
See price & reviews on AmazonEach link opens in a new tab.
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