Any number between 7.2 and 7.8 is an ideal pH for swimming pools or 80 to 120 ppm. Your pool testing kit should be able to measure both of these numbers. If your pool’s pH is below this range, the water is too acidic and can cause scaling and damage to pool equipment. If the water’s pH is above this range, it can decrease the effectiveness of necessary chemicals, like chlorine.

You should add chlorine within 48 hours of filling your pool with water. In just 24 hours, bacteria and algae will begin to grow and contaminate your water. After that point, you’ll need to shock the water with high levels of chlorine, and you’ll likely need to do additional vacuuming to get the pool clean. It’s important to check your chlorine levels two to three times a week and add more chlorine as needed to maintain a healthy level.

Yes, you will need building permits for an inground pool, and your pool installation company should pull them for you. The permit filing fee will usually sit between $400 and $1,800, and it should appear on your contract or invoice. You may want to confirm with your contractor that they will pull all necessary permits. You might also need a permit for a new fence, as many municipalities have special fencing requirements for properties with pools. A fence permit costs between $50 and $500. This expense may not be included in your pool installation estimate.

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.