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You can place a pool alarm on the surface of the water or mounter underwater with motion detectors. Alarms placed on the surface will alert you if it detects wave movement. If mounted below the surface, known as "sub-surface,” the alarm detects changes in water pressure.

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.

A few factors influence the time it takes for a pool to heat up, including the size of your pool, the temperature outside, and how much direct sunlight is hitting the water in the pool. With these factors in mind, it takes 12 to 72 hours to raise the temperature in a pool by 20 degrees Fahrenheit.

While you can run a pool heater all day, it is advised only to run it during the day, as it is more energy efficient. At night, it is better to purchase a solar pool cover to retain the heat within the pool.

You should always run your pool pump in freezing weather to keep the water moving. Doing so prevents the pool water from freezing and protects your pool from the damage that often comes along with frozen water. You should also run your pool pump when temperatures are approaching freezing, as a precaution. There’s no need to run a pool heater during the winter, as keeping water moving is generally enough to keep it from freezing.