How long a pool liner lasts depends on the type of pool. Most in-ground pool liners last between six and 12 years, while aboveground pool liners last anywhere from six to 10 years. You can extend the life of your pool liner by maintaining proper pool chemistry, adding chemicals individually to avoid staining the liner, using a pool cover to protect it from the sun, and keeping sharp objects away from it.

You shouldn’t swim in a pool with algae. When there’s algae, there’s also bacteria that’s feeding on the algae. Also, algae-infested pool water is often chemically imbalanced, which means germs like Cryptosporidium, Giardia, and E.coli could be present. These germs can cause a range of illnesses from gastrointestinal issues, to rashes, and respiratory problems.

The best thing to do is to get rid of the algae first, test and balance the water, and then you can enjoy swimming without any worries.

It can take anywhere from 12 to 24 hours to fill the average pool with water—and that’s if you use a couple of garden hoses. A water delivery service can fill your pool in one to three hours. Some services even pre-treat the water so it’s swim-ready as soon as it’s filled.

You should add one 3-inch chlorine tablet for every 5,000 gallons of water in your pool. If you have a smaller pool, it’s better to use 1-inch chlorine tablets so you don’t accidentally add too much chlorine. Alternatively, you can add two to three ounces of powdered chlorine or half a gallon of liquid chlorine for every 5,000 gallons of water.