The best kind of sand for Intex sand filters is No. 20 grade silica sand, with 0.45 to 0.85mm (0.018 to 0.033 inches) and a Uniformity Coefficient less than 1.75.
Too fine a grade of sand will clog your system too fast and too soft a sand will break up and also trigger clogging.
Additionally, Intex offers glass media as well, which has proven to be a better cleaning solution than sand. The particle size is 0.4 to 0.8mm.
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What Kind Of Sand For Intex Sand Filter?
Any sand labeled as pool sand or #20 sand is suitable for your pool’s filter. There are different produicts out there under different names and some sand brands wash/rinse their sands and contain little dust, while other brands may be really dirty with plenty of dusts that can come out when you first start up the filter.
Back in the days, Quickrete pool sand used to one that sold dirty sands to some customers. Irrespective of the Intex sand you’ve got, a good practice is to backwash the sand until sight glass is clear to ensure any dust is going to waste, not your piil. Then rinse for about 40 seconds, then to Filter.Add the full 120 pounds.