An easy way to know whether your sand filter has enough sand is to check how full the filter is and what the sand looks and feels like. The filter container should be two-thirds to three-quarters full of sand. Look for interior marks indicating the ideal sand level. If you put your hand into the sand, it should flow through your fingers without clumping. The filter pressure gauge is also an easy indicator—the right amount of sand leads to normal pressure, while too much or too little sand can cause high or low pressure.

Infinity pools do require slightly more maintenance than other pools because you’ll need to constantly monitor the water level. If the water level is out of whack, it won’t correctly flow over the edge, which gives the pool its infinity look. 

That said, the rest of the maintenance is largely dependent on the type of material you choose. Concrete needs a little extra care to prevent algae growth, and you will eventually need to resurface it. Fiberglass and vinyl liners are algae-resistant but they’re not as durable.

While often confused with an endless pool, an infinity pool features a slim outer edge to trick the eye and create the appearance that the pool blends with the sky. An endless pool, on the other hand, is a small pool with a propulsion system that allows swimmers to swim against a current. These two types of pools have similar names but very different designs.

It’s best to avoid having wrinkles in a new pool liner. Since pool liners are very thin, it’s easy to have slight wrinkles in the liner upon initial installation. This might negatively affect your pool’s visual appearance and lead to tearing and holes in some cases. You’ll want to ensure proper measurements and accurate alignment during the installation process to prevent unsightly wrinkles from appearing.