How do I choose the appropriate size for a pool filter?

Several factors need to be taken into account in selecting the appropriate size for your pool filter:

• Surface area and volume of your pool: measure the dimensions of your pool. For a rectangular pool, multiply the length by the width to obtain the area. For a round pool, measure the radius of the circle, square it and multiply it by 3.14 to obtain the area.
• Filtration flow rate: this flow rate corresponds to the quantity of water that must be pumped by the filter in one minute. To calculate the filtration rate, divide the maximum volume of the pool by the desired filtration time (usually 4 hours). For example, a 60m³ pool will require a flow rate of 15 m³h (60/4).
• Selection criteria: once the filtration rate has been determined, the correct type of filter for the pump power must also be taken into account.
• Choose an appropriate filter: selection of a filter with a throughput that is slightly higher than the pump flow rate is recommended. If the pump flow rate is too high, water will pass through the filter too quickly and filtration quality will be lost. If the flow rate is too low, filter backwashing will not be effective.