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It's not ideal, and if your pool’s pH is seriously low (below 7), swimming can be dangerous until you raise it, potentially causing severe irritation and damage to the skin and eyes.

Keep in mind that low pH can also be responsible for damaging the pool itself. Acidic water can contribute to the cracking of your pool's liner, which may cost up to $2,500 to replace, making this an expensive fix.

Your indoor pool can be heated or unheated, but the decision depends on your local climate. In regions with freezing temperatures, heating your pool will keep it warm during the winter, especially if it’s only covered with a greenhouse enclosure. 

If you keep your swimming water warm and toasty, budget between $300 and $5,700 for the cost of installing a pool heater.

No, shock and chlorine are not the same thing, though they are related and both are used for pool maintenance. Regular chlorine, often in the form of tablets, is a sanitizer used for routine, day-to-day maintenance to keep a steady chlorine level. Pool shock, however, is a highly concentrated dose of chlorine used periodically for a more intense cleaning. It rapidly raises chlorine levels to fix issues like cloudy water or algae growth and also eliminates chloramines, which are byproducts of regular chlorination. Because their purposes and concentrations differ, they are not interchangeable, and proper pool care typically requires using both.

Most importantly, you should never cut corners when building a pool. Whether it’s an in-ground or aboveground, poorly constructed pools are dangerous to both the swimmers and your property. Leaks can even lead to home foundation damage. While you can DIY smaller elements of pool installation, always hire a contractor to oversee the process.