Sand filters are a decidedly advantageous solution for efficient pool filtration. The sand filters work by gravity: the water conveyed to the filters by the pump passes through the filtering layer and is then thrown back into the tank, free of suspended impurities. This system can be used for all models of above-ground pools and is very easy to install.
A non-negligible advantage, then, is that the sand filters ensure high quality filtration at low costs. Furthermore, they do not need replacing periodically but last for the whole season.