Round and freeform pools are popular choices for a small backyard, although a small yard may be able to accommodate a variety of shapes. When planning a pool for your small yard, remember to take into account pool deck space, fencing requirements, and other pool-related factors that may limit your choices.

It can take 24 to 48 hours to fill a 15,000-gallon pool with a garden hose. A hose will pump out anywhere from 4 to 12 gallons per minute, with the average hose resting somewhere between 8 to 9 gallons per minute. If you want to speed up the process, a water delivery service can fill your pool in a few hours or less.

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.

If a pool turns green after adding salt, there’s a good chance the salt is the problem. Certain brands of salt have high levels of iron that cause pool water to take on a green hue. Test your pool water to determine if this is the issue. The green color will usually filter out. Brush the sides of the pool to knock the iron off.

This is just one reason a pool can turn green that is specific to adding salt. Many other reasons a pool can turn green include algae growth, low chlorine levels, a faulty filter, etc.