Pool water turned green after vacation — Benidorm, Valencian Community
Returning home to a pool full of green, murky water is one of the most common shock-and-treat scenarios. Algae blooms develop quickly when the pump is off or chlorine drops to zero for even a few days—warm temperatures accelerate the problem. The fix starts with brushing the walls and floor, then a triple- or quadruple-dose chlorine shock (bring free chlorine to 30 ppm for green, 40 ppm for dark green or black). Running the pump 24/7 while the chlorine works, backwashing or cleaning the filter frequently, and adding clarifier or flocculant to capture dead algae are all part of the recovery process. A pool technician can perform the shock treatment, test and rebalance pH, alkalinity, and CYA levels, and have the pool swim-ready in 2–4 days.
Who to call
For this problem in Benidorm, call a: Pool & Spa Technician
Find a Pool & Spa Technician in BenidormSymptoms to look for
- Pool water is bright green, dark green, or blackish-green instead of clear blue
- Water is cloudy or murky and you cannot see the pool floor
- Slimy green film on pool walls, steps, or floor when touched
- Strong musty or swamp-like odor coming from the pool
- Pool filter pressure gauge reads higher than normal due to algae clogging
Emergency Service in Benidorm
Emergency services in Benidorm respond within 30–90 minutes, though summer-peak occupancy (June–September) can stretch waits sharply when AC and plumbing failures cascade across full towers. Callout rates run €50–€120 plus €35–€60/hour including IVA — standard Costa Blanca pricing, though high-rise rope-access or crane jobs carry premiums. Verify the contractor is a registered instalador autorizado with the GVA before granting entry.