Domakihub How to Open Your Pool for Spring the Right Way
A practical step-by-step guide for homeowners, rental managers, and hoteliers in Greece.
Reviewed by Domakihub pool pros · 2026-06-23 · 5 min read
After months of sitting idle through a Greek winter, a pool needs more than a quick rinse before guests or family jump in. The video above walks through the full process visually, while this guide breaks it down into five clear, ordered steps you can follow whether you manage a private villa, a holiday rental, or a boutique hotel. Get this right at the start of the season and you will save money on chemicals, avoid algae outbreaks, and open with confidence.
Why Spring Opening Sets the Tone for the Whole Season
A pool that is opened correctly in March or April stays easier to maintain all the way through October. Skipping steps — especially water balancing and equipment checks — leads to the cloudy, algae-green water that frustrates guests and costs significantly more to fix mid-season than it would have to prevent.
In Greece the shoulder season starts early. Holiday rentals often receive their first bookings in late April, and hotels may open pools as early as Easter weekend. That means the spring opening window is tighter than in northern Europe, making a structured checklist even more valuable.
What You Will Need Before You Start
Gather your supplies in advance: a good water test kit or test strips, a multifunction shock treatment, chlorine tablets or liquid chlorine, algaecide, pH increaser and decreaser (sodium carbonate and muriatic acid), a pool brush, a skimmer net, and a vacuum. Having everything on hand means you can complete the opening in a single session rather than making several trips to the pool shop.
Check that your pump, filter, and any automatic cleaners are accessible and visually intact before you begin. A cracked pump housing or a split return line is far easier to spot and order parts for before the water is back in circulation.
5 Steps to Open Your Pool for Spring
- 1
Remove, clean, and store the cover
Pull the cover off carefully to avoid dumping debris into the water. Lay it flat, scrub both sides with a mild soap solution, rinse thoroughly, and allow it to dry fully in the sun before folding. A damp cover stored in a bag will develop mould and degrade faster. Inspect the cover for tears now — repair or replace it before you need it again in autumn.
- 2
Reconnect and inspect all equipment
Reinstall any equipment you winterised — return fittings, skimmer baskets, directional eyeballs, ladders, and handrails. Reconnect the pump and filter, check all valve positions, and look for cracks or loose fittings in the plumbing. Prime the pump if needed and run it briefly to confirm water is circulating properly before adding any chemicals.
- 3
Test and balance the water
Use a reliable test kit to measure pH, total alkalinity, calcium hardness, and stabiliser (cyanuric acid) levels. In Greece, tap and well water often has high calcium hardness, which can cause scaling on tiles and in the filter. Adjust total alkalinity first (target 80–120 ppm), then pH (7.2–7.6), then calcium hardness (200–400 ppm), and finally stabiliser (30–50 ppm). Allow 30 minutes of pump run time between each adjustment before re-testing.
- 4
Shock the pool
Even if the water looks clear, shock it with a heavy dose of chlorine (typically 2–3 times the standard dose, following the product label for your volume). This kills any bacteria, algae spores, and organic matter that has built up over winter. Run the pump for at least 8 hours — ideally overnight — after shocking. Do not allow swimming until the free chlorine level has dropped back to 1–3 ppm.
- 5
Vacuum, brush, and add algaecide
Once the water has cleared after shocking, brush all walls and the floor to dislodge any remaining sediment, then vacuum to waste. Follow with a dose of algaecide appropriate for your pool volume. This final step creates a protective baseline that makes weekly maintenance far simpler. Set your pump timer for at least 8 hours of daily circulation and you are ready to open.
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FAQ
- When is the right time to open a pool in Greece?
- Aim to open when the overnight air temperature stays consistently above 15°C — typically late March to mid-April in most of mainland Greece, and slightly earlier on Crete and the southern islands. Opening before algae gets established in warming water is easier than treating a green pool.
- Can I swim the same day I open the pool?
- Not immediately. After shocking you need to run the pump for at least 8 hours and then test the water. Swimming is safe only when free chlorine is between 1 and 3 ppm, pH is between 7.2 and 7.6, and the water is visibly clear. This typically takes 24–48 hours after the initial shock treatment.
- Do I need to drain and refill after winter?
- Usually no. A properly winterised pool needs balancing and shock treatment, not a full drain. A complete drain is only warranted if total dissolved solids (TDS) are extremely high, if the water is heavily contaminated, or if the pool has been left untreated for more than one season. Consult a pool professional before draining, as an empty shell can shift or crack depending on soil conditions.