How often should the quartz sand in the quartz sand tank be changed?

The quartz sand in the swimming pool sand tank is best replaced once every 1 or 2 years: 1. During backwashing, the filter layer will expand upwards by 1.2 to 1.3 times in volume, and the upward water flow will drive the filter layer to flow up and down, causing the filter particles to collide with each other. Because the material is the same, the hardness is the same, and therefore, some of the filter materials will be broken into fine particles and lost with the backwash water; 2. Some quartz sands will be welded when the acid-base changes due to insufficient purity; 3. After long-term use, the interior of the filter layer will be partially surrounded by colloid due to uneven distribution of water flow, and lose its effect; so the longer the time, the worse the filtering effect of the swimming pool sand tank, and some sand will be consumed and taken away due to backwashing , so we need to replace the sand in the sand tank within the specified time limit. Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..