Are Dolphin pool cleaners good?

Lots of pool owners think Dolphin makes the best pool cleaners, and it’s easy to see why. Many of Dolphin’s cleaners are among the best in their class, and leave pools sparkling clean with little effort on your part.

>> Click to read more <<

Thereof, which Dolphin Nautilus is best?

Our best overall pick, the Dolphin Nautilus CC Plus Robotic Pool Cleaner, has dual scrubbing brushes, three one-touch cleaning settings, and a tangle-resistant cable.

Subsequently, why does my dolphin pool cleaner do wheelies? What causes automatic pool cleaners to flip or do wheelies? The water level in a pool is one of the most common causes for this problem. When the water level is too high, the water line is very close to the coping. So when the cleaner starts to climb the wall, it hits the coping and flips on to its back.

Likewise, people ask, is Maytronics an Israeli company?

Headquartered in Israel, Maytronics operates subsidiaries in the U.S, France and Australia, and sales offices in Spain and Latin America.

Why won’t my Dolphin pool cleaner climb walls?

My Dolphin Won’t Climb Walls / Gets Stuck

Clean filters: The Dolphin’s filters may be clogged and need to be cleaned. Make sure you clean these filters after each use. Do not allow filters to dry out before cleaning. Deeper cleaning of the filters is also highly encouraged and may be required occasionally.

How often should I run my dolphin pool cleaner?

Ideally, you need to run your robot pool cleaner daily or at least once a day if you’re always swimming in it. But if you don’t swim in it as much, run it at least once weekly or every two weeks. When you’re using a swimming pool cover all the time, you may wash your pool monthly.

How do you store dolphin pool cleaner?

STORE CLEANER – Store the Pool Cleaner in an area that is out of the direct sun and where the temperature stays above 41 degrees. If you don’t have a Caddy, place the Cleaner on its side so that its weight does not flatten the brushes.

Where is the dolphin pool cleaner made?

The company does not keep its robots in inventory because it sells such a large number of models; rather, it manufactures according to orders from distributors from its single factory in Israel.

Can I use an extension cord with my Dolphin pool cleaner?

Dolphin Nautilus Automatic Robotic Pool Cleaner with Dual Filter Cartridges, Two Scrubbing Brushes… Dolphin does not recommend an extension cord.

How long do Dolphin robotic pool cleaners last?

Generally, you can expect at least 5 years‘ service from your quality robotic pool cleaner. The more expensive units are generally better quality – you do get what you pay for.

Can I leave my Dolphin pool cleaner in the pool overnight?

While the unit can remain in the pool during use of the weekly timer function (if available on your model), we do not recommend leaving the cleaner in the pool for long extended periods of time.

Where are Maytronics pool robots made?

The company does not keep its robots in inventory because it sells such a large number of models; rather, it manufactures according to orders from distributors from its single factory in Israel. The factory employs 250 to 400 workers, depending on the season, 40 of whom are from the kibbutz.

How long should you run the dolphin pool cleaner?

The Maytronics Dolphin Nautilus Robotic Cleaner is self-contained and fully automatic. Just drop it in your pool, turn it on and leave it for about 3 hours.

Can you leave pool vacuum in pool overnight?

Cleaners aren’t meant to stay in the pool 24/7. This is true for all cleaners. Pressure side cleaners run on a schedule every day so why take it out? Leaving the cleaner in the pool 24/7 increases its exposure to corrosive chemicals in the water, such as chlorine or shock.

Are robotic pool vacuums worth it?

Bottom Line: Yes! Robotic pool cleaners are 100% worth the investment. It’ll be the best money you ever spent on your swimming pool. Any automatic swimming pool cleaner should be able to clean your pool within about three hours, depending on your pool’s size.

Which is a better pool cleaner Polaris or Dolphin?

The Polaris pool cleaner is the better choice here. Not only is it slightly less expensive than its Dolphin competitor, but it can also manage a slightly larger pool than the Dolphin pool cleaner. It also uses more impressive technology to navigate and clean your pool.

How do I choose a dolphin pool cleaner?

The pool size is a factor in the selection of the pool cleaner as the larger the pool, the more surface area the unit needs to cover so you want to select one that has a longer cycle time (ideally, one with multiple cycle times so that you can control the amount of time you unit spends cleaning).

How long do Dolphin pool cleaners last?

Generally, you can expect at least 5 years‘ service from your quality robotic pool cleaner. The more expensive units are generally better quality – you do get what you pay for.

Why can’t you use an extension cord with a dolphin pool cleaner?

Do not use an extension cord. In a wet deck environment the risk of stray voltage while small is signicant.

Can you leave a robotic pool cleaner in the pool overnight?

Leaving the cleaner in the pool 24/7 increases its exposure to corrosive chemicals in the water, such as chlorine or shock. Over time, these chemicals break down parts in the cleaner and discolor the cleaner. The truth of the matter is – everyone leaves them in the pool, pretty much all the time.

What is dolphin echolocation?

Dolphins and other toothed whales locate food and other objects in the ocean through echolocation. In echolocating, they produce short broad-spectrum burst-pulses that sound to us like “clicks.” These “clicks” are reflected from objects of interest to the whale and provide information to the whale on food sources.

What company makes Dolphin pool cleaners?

Maytronics

Are pool robots worth it?

Bottom Line: Yes! Robotic pool cleaners are 100% worth the investment. It’ll be the best money you ever spent on your swimming pool. Any automatic swimming pool cleaner should be able to clean your pool within about three hours, depending on your pool’s size.

Can I leave my robotic pool cleaner in the pool?

You can swim while your bot cleans the pool, but it’s better not to. Swimming churns up the water. If the machine is in the water at the time, the current will buffet it, making it harder for it to complete its work. It’ll have to work harder to cover the same ground.

Is Zodiac the same as Polaris?

You are correct: Zodiac and Polaris are the same company, however, Polaris is the correct brand for our pressure cleaners. We have requested this page be updated to remove any confusion.

What is the most reliable robotic pool cleaner?

The Dolphin Nautilus CC Plus Robotic Pool Cleaner is our top pick

  • Best Overall: Dolphin Nautilus CC Plus Robotic Cleaner at Amazon. …
  • Best Smart: Polaris Sport Robotic Pool Vacuum Cleaner at Amazon. …
  • Best for Inground Pools: Hayward SharkVac XL Robotic Pool Vacuum at Amazon. …
  • Best for Leaves: …
  • Best for Vinyl Pools: …
  • Best Budget:

Does the dolphin pool cleaner pick up leaves?

Answer: This pool cleaner is excellent, it pick up all the leaves and we live in Costa Rica with a lot of trees near the pool, we change the filter with the bag and it works better.

Is a Maytronics a good brand?

5.0 out of 5 stars Best vacuum ever! The Maytronics Dolphin series is the best, I’ve just begun using my second one, the DX3. It’s easy to use, has great suction and cleans the pool every time.

How much is a Maytronics dolphin?

As with most robotic pool cleaners, the $1,499 Maytronics Dolphin S300i is rather pricey, but when you consider the hours spent scrubbing and vacuuming your pool over the course of the season, it’s money well spent.

Can you leave the Dolphin cleaner in the pool?

Can you leave the Dolphin in the water? It is safe to leave your Dolphin cleaner in the water when not in use. However, (when adding chemicals to the pool) please remove the Dolphin until the proper chlorine and PH balance are obtained.

Why is my pool cleaner not moving?

When a suction cleaner is sluggish or slow, it’s usually a clogged pump basket or dirty filter that is to blame. Other problems include holes in the cleaner hose, sucking air into the hose, or the filter pump could be drawing in air, reducing water-flow volume.

Does Dolphin s300 come with caddy?

The S300i comes with a two-wheeled caddy that holds the robot and the head unit and has a place to hang the data cable.

Is Aquabot out of business?

2020: Fluidra/Zodiac discontinues all production of the Aquaproducts (US assembled) line of cleaners and related repair parts and closes the New Jersey factory. The remaining stock of parts is now being shipped from a third party fulfillment warehouse until supply has been exhausted.

Can I leave my dolphin pool cleaner in the pool?

This will help protect the Dolphin from surges in power such as thunderstorms. Can you leave the Dolphin in the water? It is safe to leave your Dolphin cleaner in the water when not in use. However, (when adding chemicals to the pool) please remove the Dolphin until the proper chlorine and PH balance are obtained.

Are dolphin pool cleaners Electric?

The Dolphin Nautilus (99996323) is a robotic pool vacuum that is capable of cleaning most inground pools. Like other robotic pool cleaning machines, all you need is an electric power source. No pumps needed. This model cleans the floor and walls of pools up to 50 feet across.

Can you leave Dolphin Nautilus in the pool?

Can you leave the Dolphin in the water? It is safe to leave your Dolphin cleaner in the water when not in use. However, (when adding chemicals to the pool) please remove the Dolphin until the proper chlorine and PH balance are obtained.

Does the dolphin pool cleaner pick up algae?

Yes it does. Note when lifting the cleaner up from the water, some water with algae will leak back to the pool. So lift fast. 1 of 1 found this helpful.

Can you use an extension cord with Dolphin pool cleaner?

Dolphin Nautilus Automatic Robotic Pool Cleaner with Dual Filter Cartridges, Two Scrubbing Brushes… Dolphin does not recommend an extension cord.

How long is Maytronics warranty?

Maytronics warrants that your Premier Dolphin pool cleaner will be free from defects in material and workmanship for 3 years. To prove how serious we are about delivering the best-in-class high performance robot, the Dolphin Premier is backed by the very best warranty in the industry.

How often should you use dolphin pool cleaner?

Ideally, you need to run your robot pool cleaner daily or at least once a day if you’re always swimming in it. But if you don’t swim in it as much, run it at least once weekly or every two weeks. When you’re using a swimming pool cover all the time, you may wash your pool monthly.

How does dolphin escape work?

The Amazing Gentle Giant. Innovation is at the heart of the Dolphin Escape. It’s an extremely energy efficient machine, using around 90% less power than many common older types of pool cleaning robots. Maytronics accomplished this by using a low voltage DC motor, which only requires around 180 watts to function fully.

How long do Dolphin pool vacuums last?

However, most people will find that a robotic pool cleaner lasts for at least 3 to 5 years, with some extending the longevity of their machine to 7 years or more with basic maintenance and occasional parts replacement. How much do robotic pool cleaners cost?

How much is a Dolphin active 20?

2022 Cleaners Item Number 2022 Price
Dolphin Encore Basic $699.99
Dolphin Active 15 Preformance $799.99
Dolphin Active 20 Advanced $999.99
Dolphin Active 30 Deluxe WiFi $1299.99

Are pool vacuums worth it?

Bottom Line: Yes! Robotic pool cleaners are 100% worth the investment. It’ll be the best money you ever spent on your swimming pool. Any automatic swimming pool cleaner should be able to clean your pool within about three hours, depending on your pool’s size.

What is the best brand of pool cleaner?

The 7 Best Pool Cleaners on Amazon

  • Best Overall: Dolphin Nautilus CC Plus Robotic Pool Cleaner.
  • Best for Large Pools: Poolvergnuegen Hayward Pool Cleaner.
  • Best for Small Pools: Zodiac Baracuda G3 Automatic Pool Cleaner.
  • Best for Above-Ground Pools: Dolphin E10 Robotic Pool Cleaner.

Which pool cleaner is better Polaris or Dolphin?

The Polaris pool cleaner is the better choice here. Not only is it slightly less expensive than its Dolphin competitor, but it can also manage a slightly larger pool than the Dolphin pool cleaner. It also uses more impressive technology to navigate and clean your pool.

How much is a dolphin active 30?

2022 Cleaners Item Number 2022 Price
Dolphin Encore Basic $699.99
Dolphin Active 15 Preformance $799.99
Dolphin Active 20 Advanced $999.99
Dolphin Active 30 Deluxe WiFi $1299.99

How often do you need to vacuum your pool?

In general, it’s a good idea to vacuum your pool once a week. You should also vacuum your swimming pool any time you notice large amounts of debris, dirt, or leaves on the floor of the pool (for example, your pool may need vacuuming after a heavy storm).

What is the best robotic pool cleaner?

The Dolphin Nautilus CC Plus Robotic Pool Cleaner is our top pick

  • Best Overall: Dolphin Nautilus CC Plus Robotic Cleaner at Amazon. …
  • Best Smart: Polaris Sport Robotic Pool Vacuum Cleaner at Amazon. …
  • Best for Inground Pools: Hayward SharkVac XL Robotic Pool Vacuum at Amazon. …
  • Best for Leaves: …
  • Best for Vinyl Pools: …
  • Best Budget:

How long does a Nautilus CC plus last?

Easy to use and ideal for in-ground swimming pools up to 50 feet, this cleaner will leave your pool sparkling clean in just 2 hours. Spend more time enjoying your pool and less time cleaning.

Product Dimensions 16 x 10 x 16 inches
ASIN B00Q8M0NWE
Item model number Nautilus CC Plus

How does dolphin M400 work?

How do I program dolphin quantum?

Can you swim with the Dolphin cleaner in the pool?

Dolphin pool cleaners are safe to use for the general public, however, (for safety precautions) we do not recommend swimming while the cleaner is in use. What are the ideal operating temperatures for my Dolphin cleaner? Dolphin robotic pool cleaners are best used in temperatures between 43 and 93 degrees.

Does Dolphin M400 have Bluetooth?

The Dolphin M400 is unfortunately not smartphone or Bluetooth compatible. … The Dolphin M400 unfortunately does not have the option to upgrade to Bluetooth.

How does dolphin pool cleaner work?

Dolphin Robotic Pool Cleaners

Dolphin is a robotic cleaner that circulates your pool, picking up debris and scrubbing away dirt and algae from the floor, walls, and waterline. Its smart technology maps out the most efficient cleaning route, navigates using PowerStream mobility, and can sense obstacles as it works.

How do I clean my dolphin m400?

Can you swim with a pool robot?

You can swim while your bot cleans the pool, but it’s better not to. Swimming churns up the water. If the machine is in the water at the time, the current will buffet it, making it harder for it to complete its work. It’ll have to work harder to cover the same ground.

What is an escape pool?

We create luxury swimming pools and spas that are modern, natural, formal and traditional. Our designs are unique and innovative and fit the architecture and personality of each unique home. After a long day unwind at your own swim up bar or relax and retreat in a custom in-ground spa.

Is it better to run a pool pump at night or day?

It may be cheaper to run the pump at night, but honestly you should run it 1 hour a day per 10 degrees of temperature at least, and it should be during the day. Running the pump at night should only be when you are doing a major chemical treatment such as algae clean-up.

How do I vacuum dead algae in my pool?

How often should I run my pool robot?

Ideally, you need to run your robot pool cleaner daily or at least once a day if you’re always swimming in it. But if you don’t swim in it as much, run it at least once weekly or every two weeks. When you’re using a swimming pool cover all the time, you may wash your pool monthly.

How long does dolphin M400 run?

Recommended for pools up to 15 metres. (50ft.) in length, the M400 is the cost-effective way to ensure entire pool cleaning, including the floor, walls and waterline. A cleaning cycle time of 2.5 hours will balance cleaning between the walls, water line and floor.

How do I pair my phone with dolphin?

Make sure Bluetooth® is active on your smartphone and download and activate the MyDolphin™ app. Once downloaded, the app searches for and displays the serial number of the nearest Dolphin robot. Click on the Dolphin serial number displayed on your screen. Register by entering your email address and creating a password.

How long does the dolphin pool cleaner run?

The Maytronics Dolphin Nautilus Robotic Cleaner is self-contained and fully automatic. Just drop it in your pool, turn it on and leave it for about 3 hours.

Is it OK to leave Dolphin in pool?

Can you leave the Dolphin in the water? It is safe to leave your Dolphin cleaner in the water when not in use. However, (when adding chemicals to the pool) please remove the Dolphin until the proper chlorine and PH balance are obtained.

How long does dolphin escape run?

Pool Attributes
Pool Size/Cable Length Up to 30 Ft
Cleaning Mode(s) Standard
Cleaning Cycle(s) 1.5 Hours
Mobility CleverClean™

Is a robot pool cleaner worth it?

Bottom Line: Yes! Robotic pool cleaners are 100% worth the investment. It’ll be the best money you ever spent on your swimming pool. Any automatic swimming pool cleaner should be able to clean your pool within about three hours, depending on your pool’s size.

Does Dolphin Quantum have Bluetooth?

DOLPHIN Sigma Robotic Pool Cleaner with Bluetooth and Massive Top-Load Cartridge Filters, Ideal for Pools up to 50 Feet.

How do you troubleshoot a Dolphin pool cleaner?

Troubleshooting

  1. Check that the power supply cable is plugged properly into the power supply socket. Check power to the socket and reconnect Pool Cleaner.
  2. Ensure the power outlet is functioning properly and that it has not tripped the breaker in the fuse box.
  3. Turn the power supply off. …
  4. Unplug the power supply.

How do I clean my pool with more leaves?

How do I get the Dolphin pool cleaner out of my pool?

The easiest and most fun way to get the robot out of the water:

  1. Log into the MyDolphin™ Plus app and click “Pick-up mode”.
  2. The robot will reach the wall closest to it, and will rise, and will wait for 3 minutes above the water surface.
  3. Grab the robot by the handle and pull it out the water.

How does Dolphin echo pool cleaner work?

How many hours a day should you run a pool pump?

8 hours a

How do you get the Dolphin robot out of the pool?

The easiest and most fun way to get the robot out of the water:

  1. Log into the MyDolphin™ Plus app and click “Pick-up mode”.
  2. The robot will reach the wall closest to it, and will rise, and will wait for 3 minutes above the water surface.
  3. Grab the robot by the handle and pull it out the water.

How do you clean a Maytronics filter?

Is the dolphin active 20 Bluetooth?

Does this unit have Bluetooth capability? No, this Dolphin robotic pool cleaner does not have Bluetooth capability.

How do I clean my dolphin pool vacuum?

How do I use Maytronics pool cleaner remote?

Using the remote control

  1. Press the On/Off button once. The remote control will start in manual direction control mode.
  2. Use the direction control arrows (see right) to control the movement of the robot around the pool.
  3. To exit the manual direction control mode, press the Manual/Automatic select button once only.

Can I leave pool robot in pool?

Leaving the cleaner in the pool 24/7 increases its exposure to corrosive chemicals in the water, such as chlorine or shock. Over time, these chemicals break down parts in the cleaner and discolor the cleaner. The truth of the matter is – everyone leaves them in the pool, pretty much all the time.

Can I leave my Zodiac pool cleaner in the pool?

You can swim while your bot cleans the pool, but it’s better not to. Swimming churns up the water. If the machine is in the water at the time, the current will buffet it, making it harder for it to complete its work. It’ll have to work harder to cover the same ground.

How do I clean my dolphin pool cleaner?

When should I run my pool sweep?

How do dolphin pool cleaners work?

Dolphin Robotic Pool Cleaners

Dolphin is a robotic cleaner that circulates your pool, picking up debris and scrubbing away dirt and algae from the floor, walls, and waterline. Its smart technology maps out the most efficient cleaning route, navigates using PowerStream mobility, and can sense obstacles as it works.

Can you get electrocuted by a pool robot?

Two 10-year-old girls died while swimming in a private pool on Wednesday in Savyon after a malfunctioning pool-cleaning robot apparently electrocuted them. An autopsy is to be conducted to determine the exact cause of death before the girls are buried.

How long should pool sweep run daily?

You should allow the vacuum to run until it has cleaned the entire pool, including the bottom and the sides. This averages between two and six hours. The better your pool has been maintained — for example, if you vacuum every week — the less time it takes.

Can you vacuum algae out of a pool?

Set up your waste line and vacuum the pool to waste getting the algae and debris out of the pool. Don’t let the water level get too low during this process, if it gets more than 6 inches below the tile, stop. Turn the system off and refill the pool and repeat until the whole pool is vacuumed.

Can you leave a robotic pool cleaner in the pool?

You can swim while your bot cleans the pool, but it’s better not to. Swimming churns up the water. If the machine is in the water at the time, the current will buffet it, making it harder for it to complete its work. It’ll have to work harder to cover the same ground.

Does the Dolphin Triton PS have Bluetooth?

Dolphin Triton PS Plus Automatic Pool Cleaner

Cleaning Features
Colors Orange, Black
Operating Features
Drive System PowerStream
MyDolphin™ Bluetooth App Navigation

What is best cleaner for pool?

The 7 Best Pool Cleaners on Amazon

  • Best Overall: Dolphin Nautilus CC Plus Robotic Pool Cleaner.
  • Best for Large Pools: Poolvergnuegen Hayward Pool Cleaner.
  • Best for Small Pools: Zodiac Baracuda G3 Automatic Pool Cleaner.
  • Best for Above-Ground Pools: Dolphin E10 Robotic Pool Cleaner.

Does Dolphin Triton clean waterline?

The Dolphin Triton PS is powerfully nimble on vertical surfaces for intense wall and waterline scrubbing. With superior filtering capabilities dirt and debris can’t hide from this underwater cleaning machine.

Can I leave robotic pool cleaner in pool?

You can swim while your bot cleans the pool, but it’s better not to. Swimming churns up the water. If the machine is in the water at the time, the current will buffet it, making it harder for it to complete its work. It’ll have to work harder to cover the same ground.

Which dolphin pool cleaner is best for leaves?

The 5 Best Pool Cleaners for Leaves:

  1. Dolphin Nautilus CC Plus Pool Cleaner – Best Overall. Check Latest Price. …
  2. Polaris F9550 Pool Cleaner – The Runner-up. Check Latest Price. …
  3. Polaris Vac-Sweep 360 Pool Cleaner – Best for the Money. Check Latest Price. …
  4. Dolphin Triton Plus Pool Cleaner. …
  5. Hayward RC9740WCCUB Pool Vacuum.

Can you use a dolphin pool cleaner in an above ground pool?

The Dolphin E10 robotic pool vacuum cleaner was designed specifically for above-ground swimming pools, making it the perfect solution for pools up to 30 feet. Backed by a 2-year quality assurance, get a worry free clean. Take back your free time.

Can I leave my pool vacuum on all night?

Leaving the cleaner in the pool 24/7 increases its exposure to corrosive chemicals in the water, such as chlorine or shock. Over time, these chemicals break down parts in the cleaner and discolor the cleaner. The truth of the matter is – everyone leaves them in the pool, pretty much all the time.

Does the Maytronics dolphin work?

It did a superb job of scrubbing and cleaning in our tests, and offers some nice features including flexible scheduling options, multiple cleaning modes, a Bluetooth radio, and a mobile app. The app makes it easy to adjust cleaning cycles and modes, but its remote control feature can be frustrating.

Can you use an extension cord with a dolphin pool cleaner?

Dolphin Nautilus Automatic Robotic Pool Cleaner with Dual Filter Cartridges, Two Scrubbing Brushes… Dolphin does not recommend an extension cord.

How do I get algae off the bottom of my pool without a vacuum?

A nylon or rubber brush is the correct choice for scrubbing the sides of a soft-sided above-ground pool. A large pool brush makes quick work of the job, but you may need a smaller brush to clean corners. Once the particles have been removed from the sides of the pool, turn your filter back on and agitate the water.

Can I use extension cord with Dolphin pool cleaner?

Dolphin Nautilus Automatic Robotic Pool Cleaner with Dual Filter Cartridges, Two Scrubbing Brushes… Dolphin does not recommend an extension cord.

How often should a pool be vacuumed?

In general, it’s a good idea to vacuum your pool once a week. You should also vacuum your swimming pool any time you notice large amounts of debris, dirt, or leaves on the floor of the pool (for example, your pool may need vacuuming after a heavy storm).

How dolphins communicate using sound waves?

Using nasal sacs in their heads, dolphins send out rapid clicks that pass through their bulbous forehead, or “melon.” The sound is focused, then beamed out in front of the dolphin. The sound wave speeds through the water, bounces off the object under investigation, and is reflected back to the dolphin.

How does the dolphin encore work?

The Dolphin Encore is a performance in ground level model that cleans the floor and walls for pools up to 33 feet in length. Scrubs, vacuums and filters the pool with a cycle time of 1.5 hours.

What is the difference between Nautilus CC and CC plus?

The Dolphin Nautilus CC Plus is designed to be a slightly better pool cleaner than the CC. It is a little bigger, but it also has slightly bigger filters and a slightly longer attached power cord. It can handle a larger pool, as a result, and clean longer between maintenance downtime periods.

Will a pool robot pick up algae?

Your robotic pool cleaner removes everything from large leaves to algae as small as 2 microns with its easy to clean, reusable state-of-the-art filter bag.

Why is my dolphin pool cleaner floating?

ADMIN REPLY: The bag may be retaining air. Try turning the robot upside down in the water and see if air escapes.

Can I use a dolphin M400 in an above ground pool?

M400. Designed for small In-Ground & Above-Ground Pools.

How many hours per day should I run my pool cleaner?

The rule of thumb for pool maintenance is to run your pump for eight hours per day.

Leave a Comment