Endless pool may refer to one of two things. For some, it’s a term used interchangeably with infinity pool. Because infinity pools don’t have a visible edge, they look endless. For others, it’s a brand of jetted lap pool. Endless pools are engineered to fit in small spaces, but provide the benefits of a full-sized pool (think: aquatic exercise or hydrotherapy). You can even use them indoors, and they’re relatively budget-friendly because of their small size.

Yes, it’s possible to DIY a plunge pool and shave labor costs off of the project total. If you’re considering a DIY build, keep in mind that you will be responsible for pool installation and landscaping (which may require excavation). This type of DIY project is best left to particularly handy homeowners who have prior pool installation experience. 

Chlorine performs several functions, depending on where and how you use it. In drinking water, chlorine in small amounts kills potentially harmful bacteria. It's also a common ingredient in detergents for its whitening properties. Most people associate the chemical with pool use, where it works to kill and control bacteria, germs, and viruses in the water. 

It’s a good idea to run the pool pump while swimming because your filter and skimmers will be active to help keep the water clean. Additionally, if you have pool features, you would naturally keep those pumps running while you swim. However, it’s not a requirement to run your pump while you swim.