With the school holidays over and autumn on the horizon, many pool owners will start thinking about closing their pools. The good news is summer doesn’t appear to be going without a fight as forecasters are predicting prolonged spells of warm weather for some parts of the UK over the next couple of weeks. Therefore you may want to put any plans to close your pool on hold for a bit longer….
When you decide that the time has come to close your pool for the winter then this blog post is designed to give you a helping hand. If you have an in-ground pool then it is strongly advised that you winterise your pool. If you have an above ground pool then you can also winterise your pool or you have the additional option of emptying it and storing it away for the winter if that is easier.
The winterising procedure is very important for two reasons. Firstly it helps ensure your pool is in the best condition possible when you come to open it up again in the spring and secondly it helps protect your pool and its fittings from the winter conditions. To winterise your pool simply follow this step-by-step guide;
- Backwash the filter and clean the strainer.
- Check the pH is between 7.2 and 7.6 and use sodium bisulphate (to lower pH) and sodium carbonate (to increase the pH) to adjust if necessary.
- Using Chlorine Shock (calcium hypochlorite), boost the chlorine level to remove any algae that maybe present in the pool. The recommended dosing rate is 1kg per 10,000 gallons of pool water.
- To prevent algae from growing add Winterising Algaecide. The recommended dosing rate is 2.5 litres per 10,000 gallons of pool water.
- Turn on the circulation to disperse the solution through the water for a period of 24 hours.
- Reduce the water level to just below the skimmers. This is to allow for any extra water that enters the pool, ie rainfall, therefore preventing it from overflowing. WARNING: Do not lower the level too much especially if the water table is high as this could cause structural damage to the pool shell.
- To protect any exposed metal surfaces, drain the water from the pump(s), filter(s), heater and pipework.
- Leave any valves above the water level open. Any below should be closed to protect from frost damage.
- Switch off the electricity supply to the system.
- Cover the pool with a heavy-duty winter pool cover.
- Check the appearance of the water, and the chlorine/pH levels occasionally during the winter.
By following this set of guidelines it should significantly reduce the amount of work you have to do when opening the pool up in the spring. Winterising Kits are available from our website which include all the chemicals you need as well as step-by-step instructions.
Please note the information provided on this page is believed to be correct but is given without warranty and no liability is accepted or implied. Please use this information in conjunction with manufacturers instructions.