The spring opening of a PP (polypropylene) pool is the process of safely and efficiently returning the pool to service after the winter period. If winterising was carried out correctly, opening is quick, requires no major interventions, and holds no unpleasant surprises.
When is the right time to open?
The pool is usually opened when daytime temperatures have stabilised and there is no longer any risk of the water freezing. It is not advisable to wait until the water has become very warm and dirty, as problems are then far more difficult to resolve.
Step 1: Remove the winter cover
Remove the cover carefully so that any dirt does not fall into the pool. Before taking it off, it is advisable to remove accumulated water and debris from the cover itself.
Step 2: Visual inspection of the pool
Inspect the PP shell, welds, steps, and built-in fittings. Check for any mechanical damage or visible irregularities that may have occurred over winter.
Step 3: Return equipment to operating mode
Refit the plugs, replace the baskets, close the drain ports, and prepare the pump, filter, and other equipment for filling and operation.
Step 4: Fill the pool to the operating level
Top up the pool with water to the intended operating level (typically the mid-point of the skimmer, or as specified by the overflow system design).
Step 5: Start filtration
Start the pump and check the flow rate, tightness of joints, and correct operation of the filter. The first filtration run is often longer than in normal operation.
Step 6: Measure and adjust water parameters
Measure the pH and sanitiser level. Bring the pH into the optimal range (7.2–7.6), then adjust the sanitiser level accordingly.
Step 7: Shock treatment
A shock treatment is recommended at the start of the season to eliminate bacteria and organic residues that have accumulated over winter.
Step 8: Clean the filter
Carry out a thorough backwash and rinse of the filter to remove accumulated dirt and ensure good flow rates.
Most common mistakes when opening the pool
skipping the shock treatment,
operating with unbalanced pH values,
insufficient filtration run time at the start of the season,
neglecting visual inspection of equipment.
PP pool and spring opening
Thanks to the smooth, non-porous PP surface, cleaning is more straightforward and the water returns to clarity more quickly compared to porous materials.
Conclusion
Opening a PP pool in spring is a process consisting of clear, logical steps. When carried out systematically – from equipment inspection through water balancing to shock treatment – the pool is quickly brought to optimal condition and ready for a new swimming season.