Maytronics Dolphin M600 · Polaris VRX iQ+

The power supply’s button starts a cleaning cycle without a phone, so the app is not required to run the robot: scheduling, cycle-mode selection, and filter diagnostics are the functions that live only in MyDolphin Plus.

Waterline brush reaches algae film effectively, but regular (<20mm) buildup means the filter clogs weekly, the multi-layer design prioritizes fine debris at the cost of fast clogging cycles.

Unlimited runtime from corded architecture replaces battery anxiety with cable management friction and pre-session setup burden.

Onboard Sensor Nav coverage runs without a network and without anything described to it beforehand, and gives up any documented way for the owner to steer, mask or inspect the route it takes.

Above-ground pools and smaller portable installations

Design assumes fixed cable anchoring and floor-wall transitions common to in-ground pools. Above-ground liners and perimeter walls differ structurally; dock positioning becomes problematic.

Pools with heavy leaf load or thick algae blocking waterline

Multi-layer filter clogs faster with high debris. Waterline brush cannot penetrate algae layers thicker than ~2mm; manual pre-treatment required, negating automation benefit.

Owners unwilling to reposition cable seasonally or manage swivel maintenance

Climate swings require cable repositioning to prevent tangling; northern climates need winterization steps. Swivel maintenance every 6–12 months is non-negotiable for reliability.

Plaster pools with severe erosion or rough patina

Navigation assumes consistent floor texture; severely eroded plaster causes the unit to lose positional accuracy and miss sections. May over-brush thin patches accelerating wear.

Pools without a GFCI-protected outlet within cable reach

The M600 runs from a power supply that sits on the deck and plugs into a standard 120 V outlet, with a low-voltage cable to the robot. That outlet has to be GFCI-protected, which electrical code requires near a pool, and the supply plugs directly into it rather than through an extension cord. A pool whose only power is out of reach needs electrical work before the robot is usable.

Cable-averse owners or tight equipment storage

Tether handling is part of every session, and 70 feet of cable needs somewhere to live between runs. Cordless cleaners remove that step in exchange for a runtime bounded by charge.

Pools with complex geometry or non-standard features

Smart-mapping optimized for rectangular/oval layouts. Kidney shapes, spas, or bubblers cause coverage gaps. Manufacturer documentation cites unreliable calibration in complex pools.

Households wanting a cleaner that lives in the pool

The cleaner and its cable come out of the water between runs and before anyone swims, so every cycle is handled at both ends. The Easy Lift system shortens the job but does not remove it.

Pools longer than the 60 foot rating

The VRX iQ+ is rated for in-ground pools up to 60 feet in length. Longer pools and commercial water sit outside what the cleaner and its 70 foot cable are specified to cover.

Owners seeking true set-and-forget operation

Weekly filter cleaning, monthly cable swivel inspection, and seasonal cartridge replacement required. Not autonomous enough for minimal-effort schedules.