You can purchase preassembled or customized endless pools as small as 6-by-6 feet, though larger options are more common. For safety purposes, you will also need to set aside space surrounding the pool to support the pool and pool deck. A pool size chart can help you visualize the best shape for your needs.

Rectangular pools, particularly those made of vinyl or fiberglass, are the easiest to maintain. The long, straight sides, right angles, and smoother surface make regular cleaning a breeze without having to maneuver into curves and nooks. Rectangular pools also tend to be standard sizes, so you may have an easier time when it comes time to replace liners, covers, and other parts.

If you frequently use your swimming pool, an annual inspection is ideal. For pools over 20 years old, get an inspection twice a year. If you have a new pool, are selling your house, or your property went through a severe weather event, schedule a pool inspection as soon as possible.

Calcium lumps in a pool are calcium deposits that form when a pool's water parameters are not in the normal range. They can float around on the surface of the pool water, making it look and feel dirty. The most common causes of calcium lumps in pools are calcium hardness above 1,000 ppm, alkalinity over 120, and a pH over 7.8. Keeping your pool’s calcium levels, alkalinity, and pH levels within the normal, safe ranges is the best way to prevent calcium lumps and other problems, including damage to the pool surface.