31
3月
Swimming pool filter sand tank system, the sand tank needs to be replaced with quartz sand every 1-2 years!
Method of replacing sand tank filter system:
Open the filter sand tank, clean up the...
30
3月
一、 Swimming Pool Sand Filters Working Principle
Firstly, the stone-filled in the sand tank is quartz sand, which is the special filter sand to remove the tiny dirt and impurities in the pool water. Sand...