Dolphin Explorer E70 Wi-Fi Automatic Robotic Pool Vacuum Cleaner with Included Caddy, Multi-Layer Filtration, Ideal for Inground Pool up to 50 FT in Length

This unit is to replace my nearly 10 year old Dolphin M400. As far as I could tell, the specs from this unit to the M400 are identical. 3 motors - 2 drive and 1 impellar (same as the M400). 4500 gallons per hour of water movement (same as the M400). Cleans sides and water lines and lets you use ultra fine filters as well - (did not come with these specifically - but had them from using my M400 and they are the exact same fit) It came with just the 1 basic set of filters. I have ran it probably 5 times now - just got it 5 days ago, and so far this unit - like the M400 has no problem with pool drains. I don't use the app - so I can't say anything about that, sorry.

I live in a "cottage community" named Kingwood, TX, just outside of Houston. I don't expect that to mean much to the average Amazon shopper, but it's important to note that Kingwood is marketed as "The Livable Forest". When it was being developed in the 60's, 70's, and 80's, great care was taken to preserve the trees in what had once been timberland owned by paper and wood companies. The foliage is very dense. There is no place in my yard or time of year when pine needles and leaves aren't constantly falling. We even have a sweetgum tree that drops little gumball-sized pinecones that are worse to step on than lego, especially barefoot, like you would be while swimming. Our pool is under constant assault. Raking every day was a hopeless exercise in futility. We bought a battery-operated "leaf blaster" that attaches to the end of a pole and vacuums the leaves into a net bag. When gumballs weren't jamming the impeller, it was such a huge job to vacuum that the kids and I would take turns working and still be too tired to play in the pool when we finished the endeavor.Worse, if the pool started to get algae, we couldn't see the bottom to clean out the debris. We would treat/shock/filter out the algae and discover a layer of leaves at the bottom, still covered in algae that would re-infest the pool as soon as they were stirred up by a rake or the leaf blaster, leaving us blind to continue removing them, and the maddening vicious cycle would continue. It's a 27' pool with two pump inlets, so adding skimmers to those helped catch a LOT of the leaves and debris before it sank to the bottom, but the skimmers can't catch everything and the cycle continued.I asked a few neighbors, did a lot of online research, and sifted through hundreds of pool cleaning options (just watch what happens to your facebook timeline after you've googled it a few times). A highly-trusted colleague and friend bragged on and on about her Dolphin robot and the reviews were good, so I got hung up between the E10 and the more expensive Escape. The Escape purports to be able to climb walls and have better mapping of the pool surface (plus wifi/app controls, IIRC). I decided to save myself $200 and go with the cheaper E10.NO REGRETS! It doesn't matter if the water is clear or not. Just drop it in, turn it on, and walk away. Come back in an hour, empty the basket, and start it again. Lather, rinse, repeat until the basket comes out clean. It picks up leaves, pine needles, GUMBALLS, and even small sticks! If algae rears its ugly head, we can be confident that there is no debris left on the floor of the pool before kicking it with only one treatment and shock.It's not supposed to be able to climb walls, but it does occasionally go up the wall to the water line before backing back down. Reviewers complaining about it doing wheelies don't seem to understand how it works. This is how it reorients itself to change directions.An external bag instead of a filter basket would be nice so that I could add a bigger one, but then the filtration might not be as good. This isn't much of a shortcoming, because the basket is extremely easy to remove and hose out. The screens can even be popped out of it for more thorough cleaning.The power supply did fail on ours less than a year after we bought it but Maytronics, for their part, was great. They had me email some photos of the failing unit's behavior, asked a few simple questions, then sent me a new one without even asking that I return the old one (I'm a pretty technical guy, so I may try to fix it as a spare, should the new one die after the warranty expires).I REALLY wish the wire had a swivel joint on the robot (it does swivel at the power supply, sort of). After a couple of cycles, the wire will be hopelessly wound up and tangled. It's not too much of a hassle to disconnect it from the power supply and untangle it, but it shouldn't be necessary. Some users have reported good results by putting foam pool noodles over the wire to prevent it from tangling. I may try that.All in all, we have a huge above-ground pool in a notoriously hot environment with lots of trees. It's a perfect storm of conditions that can turn pool ownership into a nightmare. This robot changed our lives and was worth the expense.

I just ordered another unit because my 6 y. o. E-10 just died. My original unit was called an "Echo" but the3y look identical. But you must realize that here in S. FL I clean my pool twice a week or more, 52 weeks a year and I have many trees and no pool cage. If you live in an area where you close the pool for the winter my use is the equivalence of 12 seasons for you.My pool is an inground 20 x 40 ft (29,000 gals.) gunite pool, which the E-10 is not recommended for but I could not be more pleased with the operation. The unit cleans the pool in one session and climbs right up past the water line. The wire is plenty long but I do have to disconnect it every few weeks and unwind the kinks. If there is a draw back to using E-10 in a pool larger than recommended is that when I have a lot of leaves in the pool, the basket will overflow and some debri will get into the propeller housing or overflow back into the pool. It takes just the removal of a few self tapping screws to get at the pump propeller to clean it out. No biggie. Just clean the basket before the robot completes its cycle if there is a lot of leaves in the pool. Or buy the $1, 500 unit meant for a bigger pool.Now for the bad news. While I could not be more pleased with the robot's cleaning function, the factory support is less than zero. I wore out the 4 wheels and the axle bushings which caused the rubber tracks to fall off and my dealer could not get me replacements. Dealing directly with the factory was also a big zero. When I eventually tracked down replacement parts from EZtestpools they were able to sell me some from stock and ordered me the rest. Although the parts were cheap it took 3 orders and 3 shipping charges to get what I needed. The shipping was as much as the parts. I blame Maytronics for the problems. I was able to find replacement rubber tracks on Amazon for $15.00 a pair while Dolphin wants $60.00.Another note of caution. While many videos show the control unit being left out in the weather DON"T DO IT! It is not weather proof. Also pull the plug out when the cycle is done. The unit still draws power and feels slightly warm to the touch. My unit started shutting off after a few minutes and I opened up the box out of curiosity. Although I did build a deck box to store the unit, there was still a fair amount of corrosion on the circuit board. I resoldered all the connections and bridged a portion of the circuit that looked corroded through. Low and behold that fixed the unit.My latest problem is the unit will not turn on. The blue light goes out as soon as you let go of the button. If I disconnect the wire from the control unit the light will stay on. I assume the wire, motor or both has leaked and parts would run over $400.00 if they are available. I am guilty of leaving the robot in the pool after use. Sometimes all week. I was not happy with the wire from the start. The insulation started cracking after 1 year. It was mostly cosmetic but got really bad lately.I have been told that the extended warranty is worthless because you have to return the unit to them and they can't get parts either.One last thing. The robot removes debri and scrubs the surface of the pool. If you have cloudy water check your chemicals and clean your pool filter. I hear they have an optional fine filter basket but I have not tried it. My pool filter keeps the water clear. All and all I am happy with the unit.

If your on the fence about this purchase, don't be. Just get it! This is my first vacuum (e10) and I am really impressed after the first use. The debris basket had picked up ALOT of plant matter, fine dirt, bugs. I watched it pick up everything in it's path. It ran for about 1-2 hours on my 22ft pool. I'm glad I went with this one!