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ComparisonDegrii Zima Lite and Wybot C2 Vision

Up to three

All robot pool cleaners. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.

Where each one suits you.

The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.

Fit verdicts by condition for each robot
Condition Degrii Zima Lite Wybot C2 Vision
Pool type
In-groundthey differ DependsMaximum obstacle clearance is 3.9 in; in-ground drains, ladders or fittings taller than that can stop it. GoodDesigned for inground pool wall geometry and climbing capability; standard use case.
Above-groundthey differ GoodNo above-ground-specific validation was found; the same 3.9 in obstacle-clearance limit that concerns in-ground drains applies here too. PoorAbove-ground pool walls and entry angles differ materially; manufacturer specifies inground pools only.
Mixed setupthey differ GoodDual-radar 3D path planning for floor, wall and waterline coverage is not restricted to either installation type in the specs. DependsInground pools recommended; test before purchase on above-ground pools for wall-climbing mechanical fit.
Pool size
Small (< 400 sqft) GoodEven the more conservative 1,614 sq ft manufacturer figure is well beyond what a small pool needs to clean each cycle. GoodUnder 5,000 gallons (approximately 800 sq ft) cleaned in single 90-minute eco-mode session.
Medium (400 – 800) GoodA medium pool sits safely under both the 1,614 sq ft EU figure and the 3,800 sq ft US figure Degrii publishes. Good12,000-25,000 gallons (approximately 2,000 sq ft) cleaned in single 180-minute eco-mode session; full coverage per cycle.
Large (> 800) DependsDegrii's own EU and US listings disagree on maximum coverage (1,614 vs 3,800 sq ft); confirm against the larger pool before buying. DependsOver 2,150 sq ft requires split sessions with recharge between runs; operational overhead burden on true large pools.
Debris load
Fine (sand / silt) GoodBoth filter baskets are rated at 180 microns, with no finer mesh option documented for capturing very fine silt. GoodDual-layer 10-micron ultra-fine filtration excels at sediment capture; straightforward weekly cartridge rinse.
Leaves / large debris GoodDual 180-micron filters with 6.5 L combined capacity are sized for leaf and larger debris loads. GoodEight-mode targeting (Waterline Only, Dirt Hunting) addresses leaf accumulation; 3,592 GPH suction handles bulk debris.
Algae / heavy fouling DependsNo independent test of cleaning performance against algae was located; available coverage largely restates manufacturer specifications. DependsCamera navigation loses precision in green or very cloudy water; manual mode selection required. Separate algae treatment needed independently.
Coverage you want
Floor only GoodFloor mode is one of five selectable modes, running independently of the wall and waterline passes. GoodFloor mode cleans pool bottom thoroughly; wall-tracking during standard modes adds cross-pool surface coverage.
Floor + walls GoodA dedicated Wall mode cleans walls separately from Floor mode, among the five selectable cleaning modes. GoodDedicated wall-climbing and waterline modes; eight-mode menu supports floor-and-walls sequencing.
Floor + walls + waterline GoodOverall mode covers floor, walls and waterline together in one cycle, driven by the dual-radar 3D path planning. GoodWaterline-only, wall-only, and waterline-then-floor modes directly address algae-prone waterline; covers all three zones.

A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.