S200 Hayward filter: sand or filter media?

[primuspaul]

Anyone have experience with stuff like this: https://www.amazon.com/dp/B0DR2TFCHY
?

I have the opportunity to get enough of these for free. Just wondering if anyone has any experience with this stuff.

 

[TinFoilHat]

We don't recommend filter balls as they get very gross and do not filter for long or as well as sand does.