You love your pool, but scrubbing walls and emptying skimmer baskets eats into your weekend. The Dolphin S300 series offers robotic cleaning that handles floors, walls, and waterlines automatically, freeing you to enjoy the water instead of maintaining it. This guide reviews the best Dolphin S300 pool cleaner options and compatible accessories to help you choose the right setup for your inground or above-ground pool in 2026.
Whether you need a full robot vacuum or replacement parts like ultra-fine filter panels, we have evaluated top-rated products from Dolphin and trusted aftermarket brands. For more on the Dolphin lineup, check out our best dolphin M series pool cleaner guide.
Pros
- Wall climbing feature cleans both floors and walls, reducing manual scrubbing.
- Active scrubbing brush provides deep cleaning without damaging pool surfaces.
- Easy top-load filter basket simplifies maintenance.
- Plug and play operation makes it user friendly, no complicated installation.
- Dolphin brand reputation for reliability and performance.
Cons
- Designed for in-ground pools only, not suitable for above-ground pools.
- No remote control or smartphone app for manual direction, relies on autonomous navigation.
- Initial investment may be higher compared to manual pool cleaning tools.
The Dolphin Nautilus CC Plus is a fully automatic robotic pool cleaner specifically engineered for in-ground pools up to 40 feet in length. It is best suited for pool owners who want a hands free cleaning solution that handles both floors and walls with minimal intervention.
Standout features include its active scrubbing brush which combines wall climbing power with a continuous scrub action. This means it loosens and removes stubborn dirt, algae, and debris from pool surfaces without the need for manual brushing. The top load filter basket is another highlight, allowing quick removal of captured debris for consistently clear water.
In real world performance, the plug and play design truly simplifies pool maintenance. Simply connect the power supply, drop the unit into the water, and let it run for about two hours. Its smart navigation ensures thorough coverage even around obstacles and irregular shapes. The build quality reflects Dolphin's40 plus year legacy in pool care, using durable materials to withstand constant submersion and chemical exposure.
One potential drawback is its limitation to in ground pools only, so owners of above ground pools will need a different model. Also, there is no manual remote control, but the autonomous navigation is generally effective. At just over20 pounds, it is easy to lift but may be heavy for some users. Overall, the NautilusCC Plus offers exceptional value for those seeking a reliable, low maintenance robotic cleaner.Final verdict: For in ground pool owners who value convenience and thorough cleaning, the Dolphin Nautilus CC Plus is a top choice. Its wall climbing scrubbing action, easy filter access, and set and forget operation make it a worthwhile investment that saves time and effort.
Brand: Dolphin
Model: Nautilus CC Plus
Color: Black
Dimensions: 16 x 10 x 16 inches
Weight: 20.8 pounds
Compatibility: In ground pools up to 40 feet in length
Cleaning Cycle: Approximately 2 hours
Pros
- Wall-climbing capability ensures comprehensive cleaning of floors and walls
- Active scrubbing brush is gentle on surfaces yet tough on debris
- Simple plug-and-play setup requires no complex installation
- Cuts down manual brushing and vacuuming time significantly
- Trusted Dolphin brand with four decades of pool cleaning expertise
Cons
- Optimized for pools up to 26 feet, so larger pools may require a more powerful model
- Full cleaning cycle takes about 2 hours, which may feel long for quick touch-ups
- No built-in scheduling or remote control features are mentioned, limiting automation options
The Dolphin Nautilus Pool-Up is a robotic pool vacuum designed for small above-ground and in-ground pools up to 26 feet. It combines one-touch automation with active scrubbing and wall-climbing performance to keep your pool clean with minimal effort. Ideal for pool owners who want a reliable, hands-free solution.
Standout features include the efficient wall-climbing scrubber brush, which works on a variety of pool surfaces and shapes. The plug-and-play system makes setup incredibly simple: plug it in, place it in the pool, and power on. Within two hours, it lifts dirt, debris, and algae from both floors and walls, freeing you from manual brushing.
Design and build quality benefit from Dolphin's four decades of pool cleaning expertise. The unit is lightweight at 18.2 pounds and measures 18 x 16 x 10 inches, making it compact enough to store and easy to handle. Colors are clean white and the construction feels durable, though long-term reliability is yet to be verified with use.
One limitation is that this model is best for smaller pools, so owners of very large pools may need a bigger unit. The two-hour cycle is also not the fastest on the market, and there is no remote control or scheduling feature as part of this package.
Overall, the Dolphin Nautilus Pool-Up delivers dependable, automated cleaning for small to mid-sized pools. It is a smart investment for anyone seeking convenience, solid scrubbing power, and a reputable brand at a reasonable price.
Pros
- Active scrubber brush provides thorough cleaning without manual effort.
- Top-load filter access simplifies maintenance and reduces mess.
- Smart navigation ensures efficient coverage of various pool shapes.
- Plug-and-play operation makes it extremely user-friendly.
- Trusted brand with decades of experience in pool cleaning technology.
Cons
- Only suitable for above-ground pools up to 30 feet, not for larger or in-ground pools.
- No reviews available yet, so long-term reliability is unproven.
- May not handle very large debris like leaves or twigs as effectively as heavy-duty models.
The Dolphin E10 (2026 Model) is a robotic pool vacuum cleaner tailored for above-ground pools up to 30 feet in length. It targets homeowners who want a low-maintenance, automated cleaning solution without the complexity of traditional pool systems. With its active scrubber brush and plug-and-play design, it promises to keep your pool pristine with minimal effort.
Standout features include the active scrubbing brush that removes stubborn dirt and algae from pool walls and floors while being gentle on surfaces. The top-load filter basket is a game-changer for convenience, allowing you to empty debris without flipping the robot over. Smart Navigation Technology scans the pool to create an efficient cleaning path, ensuring thorough coverage regardless of pool shape. In real-world use, these features combine to deliver a spotless clean in about 1.5 hours per cycle.
Design and build quality reflect Dolphin's 40-year legacy in the industry. The unit is compact at 17.19 x 15.78 x 10.39 inches and lightweight at 14.6 pounds, making it easy to deploy and store. The gray finish is practical and blends well with pool surroundings. However, as a newer model, there are no user reviews yet to confirm long-term durability or performance consistency.
Potential drawbacks include its limitation to above-ground pools up to 30 feet, so owners of larger or in-ground pools will need to look elsewhere. Additionally, while the active scrubber is effective for fine debris, it may struggle with larger items like leaves or twigs. The lack of user feedback also means you are relying solely on manufacturer claims.
Overall, the Dolphin E10 is a strong choice for above-ground pool owners seeking a hassle-free, automated cleaning experience. Its combination of active scrubbing, easy filter access, and smart navigation offers excellent value for the price. If you have a compatible pool and value convenience, this robot is worth considering.
Pros
- Wi-Fi connectivity allows scheduling and monitoring from your phone
- Waterline scrubber eliminates manual cleaning of pool edges
- Active scrubbing brush removes dirt without damaging surfaces
- Dual drive handles tight corners and obstacles with ease
- Top load filter makes maintenance quick and mess free
Cons
- High initial investment compared to basic pool cleaners
- Requires stable Wi-Fi connection for full smart features
- May be overkill for smaller or above ground pools
The Dolphin Nautilus CC Supreme Wi-Fi is a premium robotic pool cleaner designed for in ground pools up to 50 feet. It is ideal for pool owners who want a fully automated cleaning solution that can be controlled remotely. With a 4.3 star rating, it promises reliable performance and advanced features like waterline scrubbing and dual drive navigation.
Standout features include always connected Wi Fi for scheduling cleanings from anywhere, and the active waterline scrubber that keeps the pool edges spotless. The dual drive system allows precise movement around obstacles and tight corners, while the active scrubbing brush is gentle on surfaces but tough on debris. The top load filter basket makes debris removal easy without getting into the water.
Build quality is solid, reflecting Dolphin's 40 years of experience in robotic pool cleaners. The unit weighs 24.6 pounds and measures 20x20x20 inches, making it robust but manageable. The black color is standard for pool equipment. Overall, it feels durable and well engineered for long term use.
Potential drawbacks include the high price tag, which may not suit every budget. Additionally, the Wi Fi functionality requires a stable home network, and the cleaner might be overkill for smaller or above ground pools. However, for large in ground pools, the convenience and cleaning power are hard to beat.
Verdict: The Dolphin Nautilus CC Supreme Wi Fi is a top tier choice for pool owners who value automation and thorough cleaning. Its waterline scrubbing, precise navigation, and remote control make it a standout. While costly, it delivers on its promise of hassle free pool maintenance. Recommended for those with larger in ground pools who want the best in robotic cleaning.
Pros
- Wall-climbing capability ensures thorough cleaning of pool sides and steps.
- Active scrubbing brush reduces manual labor and protects pool surfaces.
- Easy top-load filter access simplifies debris removal and maintenance.
- Quick plug-and-play setup with no complex installation required.
- Suitable for a wide range of pool shapes and sizes up to 33 ft.
Cons
- May not be ideal for very large pools exceeding 33 feet in length.
- Filter may need frequent cleaning in pools with heavy debris like leaves or sand.
- Price point is higher than some basic robotic cleaners, but offers advanced features.
The Dolphin Nautilus CC is a robotic pool cleaner designed to take the hassle out of pool maintenance. It is best suited for owners of above-ground or in-ground pools up to 33 feet in length who want a set-it-and-forget-it solution. With its wall-climbing ability and active scrubbing brush, this unit promises a thorough clean without manual effort.
Standout features include the top-load filter basket, which makes emptying debris quick and mess-free. The plug-and-play system means you can start cleaning in minutes: just plug it in, drop it in the water, and let it run for about two hours. Real-world performance is strong on walls and floors, though heavy debris may require more frequent filter cleaning.
Design-wise, the Nautilus CC is compact and lightweight at under 15 pounds, making it easy to lift in and out of the pool. The blue/black color scheme is standard, and the build quality feels durable. Dolphin has a legacy of reliability, and this model continues that tradition with robust materials and a simple interface.
One potential drawback is that the filter basket, while convenient, can fill up quickly in pools with lots of leaves or sand, requiring attention mid-cycle. Also, the price is higher than entry-level cleaners, but the added wall scrubbing and filter ease justify the cost for many users.
Overall, the Dolphin Nautilus CC is an excellent choice for pool owners who value convenience and effective cleaning. It delivers on its promises with minimal fuss, making it a worthwhile investment for maintaining a sparkling pool. If your pool fits within the size limit and you want to reduce manual work, this cleaner is highly recommended.
Buying Guide
Pool Size and Shape Compatibility
Before you pick a robot, measure your pool length and note its shape. The Dolphin Automatic Robotic Pool Vacuum Cleaner handles inground pools up to 40 feet, while the Dolphin Nautilus Pool-Up is ideal for smaller pools up to 26 feet. For above-ground setups, the Dolphin E10 works up to 30 feet. Matching the robot to your pool dimensions ensures thorough coverage without wasted cycles.
Wall climbing capability matters for pools with curved or vinyl walls. Models like the Dolphin Nautilus CC and Nautilus CC Plus feature active scrubbing brushes that grip surfaces and remove algae and debris from the waterline. If your pool has tight corners or an irregular shape, look for robots with smart navigation that scan and adapt their path.
Filtration System and Filter Type
The filter basket determines how fine the debris your robot captures. Standard filters handle leaves and sand, but ultra-fine filter panels trap microscopic particles like pollen and algae spores. The 9991467-R4 Ultra Fine Filter Panels from Qagea are compatible with the Dolphin S300 and many other models, offering OEM-standard pleated filtration that rinses clean with a garden hose.
Aftermarket options like the Gearwiz Ultra Fine Filter Basket provide microfiltration technology for even finer capture. If you upgrade your filter, you reduce the need for manual vacuuming and chemical adjustments. For more on compatible accessories, see our best dolphin M600 pool cleaner guide.
Ease of Maintenance and Replacement Parts
A robot that is easy to maintain saves you time every week. Look for top-load filter access, which lets you remove the basket without flipping the unit over. The Dolphin Nautilus CC Plus and Dolphin E10 both feature this design. Replacement parts like the Dolphin Genuine Replacement Part 60 foot cable keep your robot moving freely around larger pools.
Filter panels and baskets eventually wear out, so having compatible replacements on hand is smart. The Hihitomorrow 9991467-R4 Ultra Fine Filter Panel Parts are affordable and easy to install. For more on maintaining your robot, check our best dolphin M400 pool cleaner article.
Smart Features and Connectivity
Modern robotic cleaners offer Wi-Fi connectivity and scheduling. The Dolphin Nautilus CC Supreme lets you start, stop, and schedule cleanings from your smartphone, even when you are away from home. Its dual drive system provides precise movement around obstacles, while waterline scrubbing ensures a spotless ring around the pool.
If you prefer simplicity, plug-and-play models like the Dolphin Nautilus CC require no app setup. Just drop it in and let it run for two hours. For more on connected cleaners, read our best Dolphin Active WiFi pool cleaners guide.
Final Thoughts
After reviewing the top options, the Dolphin Automatic Robotic Pool Vacuum Cleaner stands out for its wall-climbing power and easy filter care, making it a solid choice for most inground pools up to 40 feet, while the Dolphin Nautilus Pool-Up Robotic Pool Vacuum offers a budget-friendly plug-and-play solution for smaller pools, ensuring you find the perfect match for your backyard oasis.
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Frequently Asked Questions
Is the Dolphin S300 compatible with above-ground pools?
Yes, the Dolphin S300 works well with both inground and above-ground pools, but check the maximum pool length. For above-ground pools up to 30 feet, the Dolphin E10 is a great alternative. Always verify your pool dimensions before purchasing.
How often should I replace the filter panels on my Dolphin S300?
Replace ultra-fine filter panels every 6 to 12 months depending on usage. If you notice reduced suction or debris bypass, it is time for new panels. The Qagea 9991467-R4 panels are a reliable replacement option for 2026.
Can I use aftermarket filters with my Dolphin S300?
Absolutely. Aftermarket filters like those from Gearwiz and Hihitomorrow are designed to fit Dolphin S300 and many other models. They offer comparable filtration at a lower cost. Just ensure the part number matches your robot (e.g., 9991467-R4).
What is the difference between the Dolphin Nautilus CC Plus and the Nautilus CC Supreme?
The Nautilus CC Plus offers wall climbing and active scrubbing with a top-load filter, while the CC Supreme adds Wi-Fi connectivity, dual drive steering, and waterline scrubbing. Choose the Supreme if you want smartphone control and precise navigation.
