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Best Robotic Cleaners for Inground Pools

Owning a  Inground fiberglass pool is no wonder you’re lucky with pool maintenance. A fiberglass pool is durable, easy to maintain, and requires fewer chemicals. However, it still requires regular maintenance.


Choosing the Best Robotic Cleaners for Inground Pools can be a time-consuming process. Each model has its own pros and cons. Here are our top picks for fiberglass pool cleaners to make things a little easier for you.


Which is the best cleaner for fiberglass pools?

Before we look at the best pool cleaner for inground fiberglass pool reviews, let’s consider the types of cleaners first. Here is a list of cleaners ranked from best to least favorable (starting with the top kind).

1- Robotic Pool Cleaners

The Automatic robotic pool cleaners do all the autopilot work and work independently. In other words, plug them in, drop them in your pool, and let them do their thing. The built-in washer lifts and collects debris from a built-in filter basket that spills when the job is done. You must remove the robot vacuum from the pool every time you decide to swim, which is the only real downside.

2- Pressure-Side Pool Cleaners

The pressure side model is ideal for picking up large debris in the in-flight collection bag. Additionally, it picks up dirt and other debris, but not as well as a robot vacuum. The main disadvantage of this type of cleaner is that it requires a booster pump to operate, but some models connect to existing pool pumps.

3- Suction-Side Cleaners

The third pool vacuum cleaner connects directly to the pool’s existing filtration system and collects debris in the existing pump basket. These work well if the pump is the right size but are not suitable as they do not have a built-in collection function, and the suction power is not as high as a robot or pressure-side cleaner.

List of Best Cleaners for Inground Pools

9.4/10 Our Score
  • Brand Polaris
  • Size 22 x 22 x 22 inches
  • Material PLASTIC
  • Style In-Ground
  • Weight 43.6 pounds


F9550 is an excellent all-purpose cleaner. Pick up the debris of all sizes and do it quietly. Don’t be disappointed if you want to dive into freshwater, read the newspaper, or drink coffee while cleaning the pool. It’s also cheaper than Dolphin Premier Robotic, so the reasonable question is why we don’t rank it by value alone.

This is the best pool vacuum for fiberglass pools for beginners. Also, not all pools are always clean. It can feel like forever responding when trying to access the repository remotely. Also, the stairs are not cleaned. This is why I think basic cleaning is more valuable than dolphins, but investing more money in good equipment is recommended for these reasons.

  • Cleaner for fines
  • With great traction
  • Works well without supervision
  • Observation box
  • With motion-sensing remote
  • Control user guide
  • Stairs are not cleaned.


9.4/10 Our Score
  • Brand Zodiac
  • Size Includes: 36′ hose
  • Style Inground suction cleaning robot
  • Color Blue
  • Weight 1 pounds


The Zodiac MX8 Suction Side Cleaner features powerful vacuum cleaner technology to maximize debris removal. You can connect the skimmer to a skimmer or a 1.5-inch vacuum line. It has advanced dual navigation for excellent pool coverage without stuttering. Regardless of the size of your pool, you can thoroughly clean the pool’s walls, floors, and water lines.

This best robotic pool cleaner for fiberglass pools helps collect 99% of the debris in the pool while maintaining maximum cleaning power. I also find the cleaner easy to assemble since it only needs to be attached to a 1.5″ vacuum line or scraper.

Another feature I love about the cleaners is the X-Drive technology, which provides advanced dual navigation to cover the entire pool. Also, there are no hangers and cleaners to clean the walls, water lines, and floors.

  • Dual navigation Technology
  • Super efficient power source
  • For any pool size or shape
  • With climbing X-Trax tires
  • High-performance
  • Suction can be tricky to get right
  • Cannot handle a lot of leaves


9.4/10 Our Score
  • Brand Aquabot
  • Color Gray
  • Size 13.8 x 16.1 x 8.7 inches
  • Material plastic
  • Style In-Ground Pools
  • Weight 28.9 pounds


Robot fiberglass pool cleaners are used in large pools up to 60 feet above the ground. Breeze 4WD can clean any surface, so it doesn’t matter what the pool looks like. Surface material can clean concrete, tile, and vinyl except for fiberglass.

Equipped with a rotating brush that softens the scrubbing of hard debris. Under the broom. Breeze 4WD runs on four wheels. It is much faster, and you can quickly move the entire pool.

This best chlorine for fiberglass pool feature improves the adhesion of the fiberglass cleaner and makes it easier to climb walls. It makes your mind less likely to be upside down. However, some customers complain that 4WD only clears half of the walls and does not cover the entire pool.

  • Affordable.
  • Strong suction.
  • Captures the tiniest particles.
  • The cable on a swivel sometimes gets tangled.



9.4/10 Our Score
  • Brand Polaris
  • Size  20 x 10 x 22.75 inches
  • Material Plastic
  • Style  Inground Cleaner
  • Weight 14 pounds


In contrast, the Polaris Vac-Sweep 360 is the best robotic pool cleaner for fiberglass pools. In other words, it is operated using the water in the pool on the pressure line. We chose it because it was well-received by consumers. Tests have shown that reputation has significant value. The vacuum easily picked up large debris like leaves and twigs, as well as small particles like sand. It’s not a big deal for the price.

On the other hand, what I had was that it was difficult to get traction with fiberglass cladding. You can still get the job done. Do not stare at this, as it can be frustrating. It is also clear that the floor is not designed for fiberglass pools. If you have one of these, you need to find another option. But still, the cleaning offered at sticker price is the highest dollar value of any model we’ve tested.

  • Easily removes large debris
  • Effective at cleaning particulates
  • Affordable
  • Filter Single Chamber Velcro Bag
  • Detailed Instructions
  • It doesn’t work on above-ground pools


9.4/10 Our Score
  • Brand: DOLPHIN
  • Size 22.1 x 18.4 x 13.2 inches
  • Style Above/In Ground pool
  • Weight 24.4 pounds


The Dolphin Advantage Automatic Robot Pool Cleaner is my favorite robot unit for several reasons. I have this best chlorine for a fiberglass pool, and the pool is cleaned in 120 minutes, perfect for pools up to 33 feet.

One of my favorite features is its energy-efficient and sustainable design, which guarantees long-term operation without recharging. It also has excellent cleaning and filtration properties, making your facility cleaner than ever before.

Also, I love the robots’ ability to climb walls and clean floors. It helps to clean the pool at the push of a button.

  • Branded by a reputable company
  • 3-settings for cleaning schedule
  • Wall-climbing capability
  • Easy to use
  • The product’s quality doesn’t justify its price.



9.4/10 Our Score
  • Brand DOLPHIN
  • Color Blue
  • size 23 x 20 x 14 inches
  • Weight 39.8 pounds
  • Style In-Ground Pools


If you prefer a fully functional intelligent robot vacuum for your fiberglass pool, the Oasis Z5i will not disappoint. Unlike the Nautilus CC Plus, you can connect to the Oasis Z5i via Bluetooth and schedule a cleaning in the MyDolphin app.

Plus, if you need to clean certain parts of the pool before welcoming guests quickly, the Oasis Z5i has exceptional waterline scrubbing and spot cleaning features. Another feature I love is the combination of an oversized dual filter and dynamic dual scrubbing. Compared to the Nautilus model above, the Oasis Z5i is more suitable for removing algae and other hard-to-remove debris.

The final highlight worth mentioning is the 36-month long-term warranty. This is the most extended warranty Maitronics offers to Dolphin Cleaners. Overall, when comparing the prices of all dolphin cleaners, I found these two models to be the best and most cost-effective for fiberglass pools.

  • 36-month warranty
  • Waterline Scrubbing
  • The cord is tangle-free
  • With super-scrubbing power
  • Effortless pool cleaning
  • Bluetooth instead of WiFi
  • More heavy



Is it possible to leave the robot pool cleaner in the pool?

The robot pool cleaner is designed to stay in the pool for 2 hours. It randomly wanders around your pool and cleans all kinds of sand and leaves from the walls and floors of your pool. It should gather in the pool by design once or twice a week.

The biggest issue you feel with a robot pool cleaner may be cleaning. So it would help if you cleaned the robot pool cleaner. Every time you clean the entire pool with the robot vacuum cleaner, you have to clean it. Therefore, it is recommended to frequently remove the robot pool cleaner to clean up the collected waste.

How are fiberglass pools and concrete pools different?

A fiberglass swimming pool is easy to maintain, durable and quick to install. It’s expensive to set up and not easy to customize, but it’s worth it in the future.

Concrete pools are highly durable and easy to customize but require maintenance. Also, installing a concrete pool can take a long time.

How big is the vacuum hose for an underground pool?

The vacuum hose size in the pool should be long enough for the vacuum port or scraper to touch the farthest corners of the pool, and there should be a depth tolerance at that point. You can pull one end out of the scraper port, pull it out with a pool vacuum cleaner, wrap it up, or remove it from the vacuum cleaner’s head without encountering such problems.

Whether or not you attach the vacuum hose to the farthest corner of the spot, you must determine the distance to the vacuum port or skimmer port.



In this post, I’ve given you a review of the Best Robotic Cleaners for Inground Pools and some answers to your questions about inground pools. Now you can hit the market and choose a model that meets your needs or even choose the best robot pool cleaner for fiberglass pools.

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