Spring arrives early in Cyprus. By late March, daytime temperatures are already climbing into the mid-twenties, and pool owners across Limassol, Paphos, and Larnaca start eyeing the water. If your pool sat mostly idle through winter, now is the time to bring it back to a safe, swimmable condition before the heat properly sets in. Getting this right at the start saves you from chasing problems all summer.
Check the Water First, Before You Do Anything Else
Resist the urge to simply shock the pool and call it done. The first step is testing the water properly, ideally with a full chemical analysis rather than a basic test strip.
Cyprus has notoriously hard water. The island’s limestone geology pushes calcium hardness levels well above what most pools should tolerate, and if you topped up the pool over winter using mains water, you may already be dealing with elevated calcium before you add a single chemical. High calcium causes scale buildup on tile lines, inside pipework, and on heat pump components. Left unchecked, it significantly shortens equipment life.
Before you start treating the water, test for:
- pH (target 7.2–7.6)
- Total alkalinity (target 80–120 ppm)
- Calcium hardness (target 200–400 ppm, though many Cyprus pools run higher)
- Cyanuric acid / stabiliser (target 30–50 ppm for outdoor pools)
- Free chlorine
- Total dissolved solids
If your TDS is very high and your calcium hardness is significantly elevated, you may need a partial drain and refill before balancing chemicals. Trying to balance badly out-of-range water by adding chemicals is expensive and often ineffective.
Clean the Pool Physically Before You Balance Chemicals
People often reach for chlorine before they’ve dealt with the physical state of the pool. That’s the wrong order.
Over winter, dust accumulates — and in Cyprus, that means fine red saharan dust and local airborne debris, especially after a calima event. Algae spores settle on walls and the floor. Leaves decompose and release phosphates into the water, which feed algae growth.
Start by:
- Skimming debris from the surface
- Brushing all walls, steps, and corners thoroughly
- Vacuuming the floor to waste (not to filter) so you’re removing the debris rather than running it through your filtration system
- Cleaning or backwashing the filter
On the filter: sand filters need a proper backwash and, depending on the age of the sand, possibly a filter cleaner soak. If the sand is more than four or five years old and you’ve been running the pool heavily, consider whether it needs replacing. Cartridge filters should be removed and washed down carefully. A clogged filter at the start of the season means your water chemistry will be harder to maintain all summer.
Inspect Equipment and Pipework
Spring opening is the right moment to check everything before the swimming season puts it under load.
Pump and motor: Listen for unusual noise. Check that the pump basket is clear and that the lid O-ring is in good condition. A worn O-ring causes air leaks, which reduce pump efficiency and can cause the pump to lose prime.
Chlorinator or salt cell: If you have a salt chlorinator, inspect the cell for scale buildup. The high calcium content in Cyprus water means salt cells scale faster here than in softer-water countries. A scaled cell runs less efficiently and will underchlorinate your pool without giving any obvious warning sign until you test the water.
Pipework and fittings: Check visible pipework for cracks, especially after any cold nights. Though Cyprus winters are mild, temperatures can drop enough to cause minor stress in older pipework that was already weakened.
Lighting and automation: Test any underwater lights, automation systems, and heat pumps before you need them.
Shock the Pool and Establish Your Baseline
Once the pool is physically clean and the water balance is corrected, you can shock treat. Use a cal-hypo or liquid chlorine shock, following dosage guidance based on your pool volume and current chlorine levels. Shock in the evening so UV doesn’t degrade the chlorine before it has time to work.
Run the pump overnight and retest in the morning. You’re looking for free chlorine in the correct range and clear, blue water. If the water is still cloudy or greenish, you may be dealing with an algae bloom that needs a second treatment and possibly an algaecide.
Establish your chemical baseline now. The high UV index in Cyprus, particularly from May onwards, burns off unstabilised chlorine very quickly. Make sure your cyanuric acid level is adequate at the start of the season so you’re not fighting chlorine loss all summer.
A Note on Timing
If you manage a holiday villa or rental property, aim to have your pool fully open and balanced at least two weeks before your first guests arrive. That gives you time to deal with any issues, a second round of treatment if needed, and confirmation that your equipment is running reliably.
For private homeowners, late March to mid-April is the right window for most of Cyprus. Coastal areas around Limassol and Paphos warm up a little faster. Inland properties near Nicosia may want to wait until early April before the water temperature makes swimming genuinely comfortable.
If you’d rather hand this off to a professional, we carry out full spring opening services across Limassol, Paphos, Larnaca, Nicosia, and surrounding areas. We test, clean, balance, and inspect, and we’ll tell you honestly if anything needs attention before the season starts. Get in touch by phone or email to book.