Easy to remove and clean filters
Thoroughly cleans pool
Has handy storage caddy
Less effective on curved surfaces
Reviewer Photos & Videos
You can't beat a Maytronics Dolphin M400 robot to clean your pool
We recently purchased the Maytronics Dolphin M400 with trolley for our pool. Easy to place into the pool, turn it on, let the robot do its thing, lift out of the pool, clean the filters and tuck it away until needed again. One of the best inventions EVER!
Purchased in November 2021 at Billabong Pool Service for $2,400.00.
Excellent product M400
Purchased about 4 years ago and has never let us down. We had a an issue with our Dolphin initially cleaning the entire pool always cleaning the deep end. By adjusting the handle angle until we found the right location to suit our pool and it cleans the entire pool including walls every time.
Noticed a big saving in water not having to backwash as much compared to our previous cleaner that worked on the suction from the skimmer box.
Good quality machine and great design. Filters simplistic but effective design are easily accessed and easy to clean. Caddy makes it easy to pack up and put away after each use.
We love it as it makes owning a pool so easy.
Purchased in March 2018 at Poolside All Seasons Pools Mackay.
This is the second season that we've had this cleaner. It does a really good job, but the wonder brushes are worn out already.
I was shocked to find out that it costs over $100 a pair...and you need two sets..!
That's a lot of money in maintenance costs..
Purchased in April 2018.
Very good, but disappointing user manual
EDIT, please read all the way through for an updated happy ending.
I originally bought a Zodiac CX35 online and was so excited to use it for the first time. Found I was happy enough until it broke within 7 days.. got an error code and it refused to move. Sent it back for a refund.
This time around I wanted to do a little more research before buying something and all roads pointed toward the Dolphin because it was tough, dependable, had finer filters and was nav intelligent apparently. First thing I noted was that it has two filter canisters n...ot just one! Where no one ever actually mentioned online whatsoever so that was a complete surprise. Also has two types of changeable filters, one I'm guessing 100 micron and a finer type. Very cool. The Zodiac only had a 200 micron (or pay an additional $80 for 100 micron) where silt would blow through back into suspension clouding up the pool. The other thing I noticed was the Zodiac impeller was actually right in the middle of the filter basket, suspect to damage ... whereas the Dolphins is independent and won't be damaged by debris spinning through filtration. (Dolphin impeller after all filtration has been completed, Zodiac right in the centre of the filters) It's definitely built tougher, which is good and seems to do a decent job of navigating the pool. I do notice it climbs the walls in the same three or four spots and can't quite make it up the steeper starting corner slopes where none of the rollers or tracks make forward contact but no robotic cleaners would. (fwiw I have a fibreglass pool and bought the WB model with foam rollers). It doesn't seem to get to the waterline much after the first few minutes, as soon as there's a little bit of matter inside the filters it stops climbing and slips as it tries to climb up before reversing back down with even the 100 micron filter installed, and I mean miniscule amount of debris in the filters (I thoroughly clean these each time), it just seems to become too heavy but so did the Zodiac as well, maybe all robotics do this? I've tried adjusting the float positions but it hasn't seemed to make a difference at all. Is it possible because my fibreglass pool is sprayed blue the shop should have sold me the CB model? In the manual it states: WB for tile and ceramics, online states also fibreglass so who knows It does pick up everything, but only if I sweep the silt down to bottom off the higher ledges. It does knock some down on it's descent if it can climb the particular area which I can tell was cleverly and purposely designed. It leaves a few small piles of silt on some of the curves/corners and stairs where my pool is strange and street shaped but I can live with that, no robot would be able to get that, it's only very small amounts.
Purchased in September 2020 for $2,200.00.
Great cleaner with easy to empty filters!
I have a large 80,000 litre Pebble Crete pool and it cleans it perfectly every time. I put it in once every week or two as required. The cartridge type filters are easy to remove and clean.
Purchased in August 2020.
Makes the resort lifestyle easy!
What a great cleaning unit the Dolphin M400 is! Easy to use, easy to maintain and it has its own trolley to relax in when it’s not hard at work cleaning the pool.
Gets right up to the waterline and steps.
Purchased in August 2020 at Placid Pools Smithfield.
Seems like a winner
Early days but very impressed so far. Picks up much more than our previous suction cleaner. Seems very easy to operate and emptying the waste compartments is an absolute breeze
Purchased in June 2020.
Amazing Product M400
I purchased my Matronics M400 yesterday from Brisbane Pool.
My previous M400 had died after 7 years of solid service without ever having one fault. My new M400 is perfect and does such a wonderful job keeping my pool sparkling clean. I have lots of trees and leaves, but this model is absolutely perfect and does a wonderful job cleaning floor, walls and waterline. Its a really good quality build and I would recommend anyone to buy this model.
Purchased in May 2020 at Brisbane Pool Robotics.
Never have seen the pool so clean in my life!
I've been using a suction pool cleaner for a while, and I've gone through about 5 of them. They're annoying to operate and restrict the features of your pool's pump system. I then came across the Maytronics Dolphin M400. It was the first time I'd seen a robotic pool cleaner in action, and I thought it was pretty amazing. I took a free demo and was amazed to find my pool sparkling clean when it was finished. The robot isn't cheap, but it's worth it. I highly recommend this product.
Purchased in February 2020 for $2,000.00.
I love our Dolphin, can't live without it!
We had actually ordered a different robot pool cleaner when we built our pool until my friends told us about the Dolphin. They had done a lot of research, so we decided to change to the Dolphin Supreme M4 and I'm so glad we did!!! It climbs the walls and spends a couple of hours vacuuming the pool, we usually chuck it in the water at night after we've finished swimming and it goes about it's job cleaning the pool so we get up in the morning and it's sparkling clean, ready for us to swim!
It's a fantastic product that cuts out soooo much of the work of owning a pool. I now recommend the dolphin to everyone I know who owns a pool!!!
Purchased in February 2015 for $2,500.00.
Dolphin left holes in liner
Have only had my dolphin m400 for 1 year. This year our pool was losing water, pool leak specialist found 2 holes where wall and pool floor meet both same size. He asked me what I use to vacuum, I showed him my dolphin and he informed me that I was the 3rd person that used the dolphin that had holes. I have vinyl liner , and I’m not sure why this would be happening.
Have tried contacting Maytronics and have not heard back. Not happy having an expensive vacuum I am affaird to use for fear of more holes in liner.
Purchased in August 2018.
Our pool looks amazing with minimal effort!
The M400 is easy to use, the filters are easy to clean, it’s runs for 2 hours straight, it climbs the walls of the pool to the top lip, it even cleans our spa including the straight edge seats! It’s perfect for people who don’t have hours to waste on cleaning, worth every cent!
Purchased in March 2019 at Traralgon heating for $2,100.00.
Great pool cleaner it does what it suppose too and leaves my pool nice and clean when finished ( glass pebble)
I usually leave the fine debry basket in as my pool gets alot of dust & settles to the bottom, this Dolphin cleans it right up no worries!
What would of been nice on this model is an app to control manual navigation/ cycle time/ and clean modes, should be a standard thing on this model range.
Happy with my Dolphin M400.
Purchased in February 2018.
After dealing with pool cleaners and the like which was a rip off and stressful, I finally bought a Dolphin. It is a revolution in pool maintenance ... just magic and has made owning a pool a pleasure.
Purchased in December 2018 for $2,000.00.
Love my Dolphin!!
My Dolphin M400 has been life changing - no more untangling the old robot driven by the booster pump and no more manual vacuuming! Easy to use, covers every part of the pool floor and picks up everything the gum and jacaranda trees can throw at it.
I leave the super-fine filters on there all the time and they’re great for collecting everything from big bits down to the fine sediments that get blown into the pool. The pool is kept nice and clean by running the Dolphin once a week and it’s east to flush out afterwards - the filters pop out and can be hosed down. Note it is a heavy unit though, especially when you first lift it out and it’s full of water.
Overall I’d highly recommend if you’re in the market for a new robot!
Purchased in February 2019.
Questions & Answers
My Dolphin M400 doesn't go up the Wall, I have the Handle diagonally positioned as per the Pool shop advice. I brought it back to the Pool shop and they tested it and they said it's working as long you have the Handle diagonally set. it went up the Wall only once in 2.5 Hr, that's all. My Pool is Pebblecrete.
Can you help Please.
Hello Alfie. Thank you for reaching out.
Wall climbing models of Dolphin, inclusive of the M400, are programmed to climb to the waterline every four minutes. if your Dolphin is experiencing difficulty climbing, the following is recommended:
- Thoroughly rinsed the filters under a tap or, soak in cartridge cleaner or a mild dishwashing detergent and warm water solution to assist in the removal of in-grained debris.
- If the unit is attempting to climb, brush down the walls and/or slope down manually to loosen any build up. The Dolphin should then be able to grip these surfaces and maintain them on its own going forward.
-Water chemistry levels and pH levels that are out of recommended range can prohibit the unit from climbing to the waterline. This is due to the surface becoming slippery and the robot is then unable to gain grip/traction. A full water test and the pool balanced is recommended. Following this, brush down of the surfaces to shift any slipperiness.
Please do not hesitate to contact our Customer Care team on 1300 693 657 option 2 for any further information.
Hi recently purchased a M400, can someone confirm the M400 can be set to clean the floor or walls only
I’m using the my dolphin plus app and can’t see any options to switch programs to floor only
Hello Shane. Thank you for reaching out. To change the cleaning mode of your Dolphin, this is located within the My Dolphin Plus application under mode or cleaning mode.
Yes tried that the actual app doesn’t have options just 2.5 cleaning cycle
If you have a direct email I’ll send some screen shots but your app has been updated and since then we have no options to clean floor only
Hello Shane. Please send any screenshots and also the serial number of your Dolphin to our team at email@example.com
Hi i have a new m400 wb, thru the app can you tell robot to concentrate on the walls cheers steve
Hello Steve. Thank you for reaching out.
Within the My Dolphin Plus application there are are options to set the Dolphin to Regular Mode, Floor Only and Ultra Clean cleaning modes. These modes do not have the option to solely focus on the walls however, if the walls are manually brushed down, the Dolphin should collect anything on the pool floor.
Get an answer from our members and Maytronics representatives
- The Maytronics Dolphin M400 is a robotic pool cleaner that is designed to deliver a deep clean.
- It has 3 brushes and super scrubbing power to pick up fine debris.
- The pool cleaner is able to be programmed, so you can schedule weekly cleanings and spot clean at the push of a few buttons through the MyDolphin Plus App.
- A tangle-free swivel allows the cleaner to move freely around the pool, making for a precise clean.
- This product has a 36-month limited warranty.
Points of praise:
- Most reviewers found that the cleaner’s filters were easy to remove and clean.
- They also found that it thoroughly cleaned their pool, and was able to pick up fine dust and debris that other cleaners could not.
- Reviewers also appreciated the storage caddy for the cleaner, saying that it was handy to keep the cleaner tucked away when it wasn’t in use.
A point of pain:
- Some reviewers found that the pool cleaner didn’t perform as effectively on curved surfaces - some people with kidney-shaped pools noted that it didn’t cover and clean the whole surface area of their pool.
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