Generally, you do not need to drain your pool to convert it to a saltwater system. The main exception is if you have used an antibacterial agent containing polyhexamethylene biguanide to sanitize your pool, as these sanitation products do not mix well with saltwater systems. If this is the case, you will need to start fresh. You can either drain the pool or treat the existing water with a high dose of chlorine to remove the antibacterial agent. If you choose the chlorine treatment, wait several days to allow the chlorine to work before proceeding with the conversion. If you are unsure whether this applies to your pool, consult a pool technician.

While you can install an above ground pool on most level surfaces, you’ll need sand to protect your liner from tearing. For example, rocks, plants, and twigs can take a toll on your liner. Adding sand will help level the pool even more. For additional support, you can also use angled foam or a foam pool cove.

Concrete pools are very durable but can crack if not properly maintained. The most significant risk is winter weather and low temperatures when water can seep into crevices and freeze. To avoid damage, use the proper winterization chemicals, and don’t completely drain your pool. Concrete pool repairs cost around $75 per linear foot for small cracks.

Upkeep. Like standard pools, the cost to maintain and service your pool is a factor. However, the benefit of a spool is that it can warm up in as little as 15 minutes, while it may take several hours to heat a standard pool. This makes owning a spool more cost-effective and energy-conscious.