There are a few differences when it comes to winterizing above- vs. inground pools. Above ground pool winterization usually involves less hassle, time, and expense than the process for winterizing an inground pool. All the lines on an above ground pool are easy to access, making draining easier. Plus, above ground pools are typically smaller, meaning cleaning is quicker, and chemicals cost less.

A pool chiller will take anywhere from 12 to 14 hours to lower your pool's temperature by 1 to 15 degrees. Most people tend to run their coolers overnight, but larger pools in warm climates take longer to cool. Choosing a chiller with the right capacity can help speed up the process.

The best way to kill off an algae bloom in an aboveground pool is to shock it with a large dose of chlorine. Shock typically kills off algae in about one to three days, although it can take longer if the pool water is in poor condition. After the shock treatment, add algaecide to prevent algae from growing back, and test the water every few days with test strips to ensure the pool’s pH doesn’t get out of whack.

In combination with adequate filtering and water chemical balance, vacuuming will keep your pool from being overrun with algae. If your pool is experiencing algae growth, the same combination will get rid of it with a bit of patience. Heavy algae growth may require the use of an algaecide, and in some cases, you’ll want to vacuum the pool 24 to 48 hours after using algaecide to remove dead algae debris.