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I own a traditional 8X4 pool for 10 years. For some time, the discharge nozzles reject among other air bubbles and the bottom of my pool is lined with very thin soil. I changed the sand of my filter lately. What is it about?

When changing sand, was the filter completely rinsed? If this is not the case, carry out a complete cleaning / rinsing cycle of the filter by operating the multichannel valve. Then bleed the air from the sand filter. Check the water level in your pool so that the skimmer does not swallow too much air if the water is too low, which could be the cause of air bubbles in your discharge nozzles. Then check that the pressure in the filter does not exceed 1 bar. Pass the vacuum broom on the bottom of the pond to remove the soil. After these operations everything should be in order.

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