By Shaz · Updated September 2026
Can You Leave a Dolphin Pool Cleaner in the Pool?
Short answer: you can leave a Dolphin in the pool between cleaning cycles for a day or two without harm — but you shouldn't make the pool its permanent home. Here's the reasoning, and the routine that keeps the robot alive for many seasons.
Why occasional soaking is fine
Dolphins are built to live underwater while working: sealed motor unit, marine-grade plastics, chlorine-resistant seals. Leaving the robot in the water overnight, or across a weekend of daily cycles, does no meaningful damage. Many owners run scheduled cleans with the robot staying in all week — the weekly-timer and app-scheduling features exist precisely for that pattern.
Why permanent residence shortens its life
- Chlorine exposure adds up. Continuous soaking slowly bleaches and embrittles plastics, brushes and cable jacketing. The robot ages faster sitting idle in chemical water than it does working.
- Sunlight through water still degrades. UV reaches a robot parked in the shallow end and fades and weakens the housing.
- The cable stews. The floating cable suffers most from permanent immersion — jacket softening and swivel corrosion are the long-term result.
- Shock treatments are the real killer. Never leave the robot in during shock chlorination or heavy chemical correction. Pull it out, wait until levels normalise, then return it.
The routine that doubles a Dolphin's life
- Run the cycle; leave the robot in if another run is coming within a day or two.
- Otherwise lift it out, empty and rinse the filter, and rinse the whole robot with fresh water.
- Let the cable hang straight to untwist (prevents tangling).
- Store on the caddy, in shade — never in direct sun on the deck.
That's the whole secret: water time for working, shade time for waiting. For the complete care schedule, see the Dolphin maintenance guide; for any misbehaviour, start with troubleshooting.
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