Can we use this with any pool?? Also what kind of filter replacement do we need for this??

Dear customer,here is Ada， thank you for your inquiry，This can only be used for above-ground swimming pools. The product comes with a filter and you need to buy No. 20 sand yourself.The product has a one-year warranty period. If you have any questions, please feel free to contact us at any time; Email: Lowescommunicate@vevor.com