The best pool vacuum for algae depends on whether you are removing settled dead algae after treatment or maintaining a pool that is already under control. A robotic cleaner can collect suitable debris and scrub surfaces, but it does not replace correct sanitation, water balance, brushing, and filtration. The same five products remain below, with their cleaning roles and specification limits made clear.
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Updated: October 18, 2026. This guide compares the existing selection by intended use and limitations; it does not claim hands-on testing of every product. Specifications and supplied accessories can vary by version.
Choose the right cleaning setup
Do not expect a robot alone to cure an active algae problem or establish that swimming is safe. Follow the pool-equipment manual, water-treatment product labels, and advice appropriate to your pool. For significant settled algae or floc, vacuuming to waste may be appropriate where the system supports it; a robot that recirculates fine particles is not necessarily the best tool for that particular stage.
Compare the existing options
| Product | Best fit | Main limitation |
|---|---|---|
| Dolphin Nautilus CC Plus | Floor and wall maintenance after suitable algae treatment | Nautilus CC Plus does not provide waterline scrubbing. |
| Polaris 9550 Sport Robotic Pool Cleaner | Robotic surface maintenance for a compatible pool | Confirm coverage, filtration, and remote functions. |
| FIILPOW Robotic Pool Cleaner | Budget maintenance if the exact model suits the pool | Model identity and filter performance need verification. |
| AIPER Cordless Robotic Pool Vacuum Cleaner | Cordless routine pickup in a pool matched to the model | Do not assume automatic return to a charging dock. |
| Dolphin Sigma Robotic Pool Cleaner | Premium robotic maintenance with model-specific controls | Verify filter kit, app controls, and actual coverage. |
1. Dolphin Nautilus CC Plus
Dolphin Nautilus CC Plus is a floor-and-wall cleaner to consider for ongoing debris collection and surface maintenance. Maytronics lists its cleaning coverage as floor and walls and explicitly states that it does not provide waterline scrubbing. Waterline coverage is a separate specification and should not be inferred from wall climbing.
Filter configuration matters when collecting fine dead algae. Check the precise version, included filter kit, pool dimensions, and supported surfaces before buying. Do not confuse climbing a wall with scrubbing the waterline. Clean the filters as instructed and assess whether fine particles remain in the pool rather than assuming all visible algae will be trapped.
Best fit: Floor and wall maintenance after suitable algae treatment.
Trade-off: Nautilus CC Plus does not provide waterline scrubbing.
2. Polaris 9550 Sport Robotic Pool Cleaner
Polaris 9550 Sport Robotic Pool Cleaner is a premium robotic option to assess for the size, shape, and surface of your pool. Its wheeled design and control features may be useful for routine maintenance, but the important algae-cleanup questions are filtration, surface coverage, and how readily collected debris can be removed.
Check the official instructions for the exact remote functions and cleaning programs. A motion-sensing remote should not be described as a sensor that prevents the cleaner from leaving the water unless the documentation establishes that feature. Confirm what is included, and do not promise custom patterns or speed control based only on the presence of a remote.
Best fit: Robotic surface maintenance for a compatible pool.
Trade-off: Confirm coverage, filtration, and remote functions.
3. FIILPOW Robotic Pool Cleaner
FIILPOW Robotic Pool Cleaner is the budget-oriented option in the existing selection. Before choosing it, identify the exact linked model and verify whether it is cordless, where it cleans, and which filter it uses. Cordless and mains-powered designs have different charging, deployment, and retrieval requirements.
Do not assume wall climbing, programmable scheduling, or ultra-fine particle capture from a generic brand description. Check maximum pool size, permitted depth and surface, retrieval method, and replacement filters. If the model’s documentation cannot establish suitability for fine settled algae, it should not be selected specifically for that task.
Best fit: Budget maintenance if the exact model suits the pool.
Trade-off: Model identity and filter performance need verification.
4. AIPER Cordless Robotic Pool Vacuum Cleaner
AIPER Cordless Robotic Pool Vacuum Cleaner covers a broad product description rather than one verified model. AIPER versions differ in navigation, coverage, filters, retrieval, and charging, so the exact linked unit must determine the recommendation. Cordless operation can simplify deployment, but it does not establish fine-algae filtration.
Do not assume automatic return to a charging dock from the general cordless product description. Check whether the selected cleaner parks for manual retrieval and requires removal for charging, or uses another documented arrangement. Confirm that arrangement before purchase, along with pool compatibility and the care required after each run.
Best fit: Cordless routine pickup in a pool matched to the model.
Trade-off: Do not assume automatic return to a charging dock.
5. Dolphin Sigma Robotic Pool Cleaner
Dolphin Sigma Robotic Pool Cleaner is the premium option to examine when navigation and broader robotic-cleaning functions matter to your maintenance routine. It may be useful as part of regular pool care after treatment, provided the exact model is suitable for the pool and the debris you want it to collect.
Check the official version’s cleaning coverage, filter arrangement, control method, and scheduling functions. Do not assume a separate handheld remote is included or that navigation guarantees every spot will be reached in every pool. Fine debris collection still depends on the installed filters and maintenance, while algae control still depends on the overall treatment routine.
Best fit: Premium robotic maintenance with model-specific controls.
Trade-off: Verify filter kit, app controls, and actual coverage.
How to choose
Distinguish active growth from settled debris
Live algae on surfaces and fine dead algae on the floor are related but different cleaning problems. Brushing, appropriate sanitation, and filtration address the broader condition. A vacuum is one debris-removal tool within that process, not a replacement for water treatment or a guarantee against recurrence.
Compare filters, not just suction claims
Large leaves and fine algae do not require the same filtration. Check the manufacturer’s actual filter options and whether a finer kit is included or sold separately. A basket described as fine should not be assumed to capture every particle. Inspect the pool after cleaning and clean the filter as directed.
Consider vacuum-to-waste compatibility
Where supported and appropriate, waste mode sends collected water and debris out rather than back through the filtration circuit. It lowers the water level and requires following the equipment instructions and local discharge requirements. Do not improvise plumbing changes or assume a system without a waste setting can be treated identically.
Match coverage and handling to your pool
Confirm pool length, depth, surface, slopes, steps, and cleaning coverage against the exact model. Consider how you will lift and clean the machine, where it will be stored, and the availability of filters and wear parts. Floor, wall, and waterline coverage are separate specifications.
Frequently asked questions
Will a pool robot kill algae?
A cleaner can remove suitable debris and scrub some surfaces, but it is not a substitute for correct sanitation and treatment. Follow the relevant product labels and equipment guidance.
Does Nautilus CC Plus scrub the waterline?
Maytronics lists floor and wall cleaning, with no waterline scrubbing for Nautilus CC Plus. Confirm the exact model rather than borrowing specifications from another Dolphin.
Can every pool vacuum capture dead algae?
No. Results depend on particle size, filter configuration, the amount of debris, and the equipment. Significant settled algae may call for an appropriate vacuum-to-waste method where supported.
Does vacuuming once a week prevent algae?
Frequency alone does not establish control. Water balance, sanitation, circulation, filtration, and surface cleaning all matter.
Which option makes sense for you?
Compare Nautilus CC Plus and Polaris for documented robotic maintenance, and assess Sigma’s extra features against your pool’s needs. Verify the exact FIILPOW and AIPER units before relying on any specific capability. For an active bloom or a large amount of settled algae, decide on the treatment and debris-removal method before choosing a robot.
For the wider selection, browse our vacuum buying guides.
Manufacturer and care guidance
Abi Khan is the founder and a content writer at GlobVacs. His published work covers vacuum-cleaner buying guides, product comparisons and practical maintenance advice. Read his author profile and selected articles.