Spring pool start-up: step by step
Getting your pool ready in spring (opening it after winterizing) always follows the same order: remove the cover and clean the surface, top up the water level, adjust the pH to 7.2–7.6, apply shock chlorine (15–20 g/m³), add algaecide and flocculant, filter for 24 h non-stop and vacuum the bottom. In 48 hours the water is ready for the first swim.
Paso a paso
- 1
Remove the cover and clean off leaves
Before touching anything, remove leaves with a leaf skimmer and clean the cover before storing it. If the cover has dirty water on it, do NOT pour it into the pool — drain it away.
- 2
Top up the water level
Fill to the middle of the skimmer. Check there are no visible leaks after 12 h.
- 3
Measure and adjust the pH
Ideal pH: 7.2–7.6. If it’s high (>7.6) use pH reducer; if it’s low, pH increaser. Before the chlorine, the pH must be in range.
- 4
Apply shock chlorine
15–20 g/m³ of granular shock chlorine dissolved in a bucket and poured into the pool at dusk. Filter for 12 h with no swimming.
- 5
Algaecide + flocculant
The next day, multi-purpose algaecide (200 ml/25 m³) in the morning and flocculant (50–100 ml/25 m³) in the afternoon. Stop the pump for 6–12 h so the sediment settles.
- 6
Vacuum the bottom and filter for 24 h
Vacuum the sediment off the bottom, run the pump for 24 h, backwash the filter and measure the chlorine. Once it’s at 1–3 ppm, it’s ready for swimming.
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When should I open the pool in Valencia?▾
In Valencia, usually between March and April, once the daytime highs already exceed 18–20 °C. Opening early lets you have the water ready for the first warm days.
Do I need to drain the winterizing water?▾
No, except in extreme cases. Winterizing water, if it was done properly with a winterizer product, is reused after shock chlorine + flocculant + filtration. Draining means 30–50 m³ of water you can save.
How long does it take for the water to be ready?▾
With the right sequence (shock chlorine → algaecide → flocculant → filter for 24 h) it’s usually ready in 48 hours. If the winterizing was neglected (cover left open, no winterizer product) it can take 4–7 days.
Sigue leyendo
Green pool water? How to clear it up in 24–48 hours
Green water = algae. Shock chlorine + algaecide + flocculant, in the right order. Results in 24–48 h.
How much chlorine to add to a pool? Dose table per m³
Maintenance: 200–250 g/25 m³ per week in tablets. Shock: 15–20 g/m³. Target free chlorine: 1–3 ppm.