Filter balls don’t work as well as sand filters because they’re unable to handle large debris, are prone to clogging, and require frequent cleaning. While they can seem more convenient and less expensive than sand filters, most need to be removed and washed regularly, or they won’t filter well and struggle with algae and dirt. Speak with your pool maintenance pro about the best filtration option for your pool.

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.

Draining a pool with a garden hose can take between eight and 14 hours depending on the depth of your pool and whether you use a sump pump. Be sure to stay close to the pool during this time to ensure the structure of your pool remains unharmed and that the water drains properly.

Generally speaking, most municipalities require you to get a permit when you build a pool. Whether or not you need a permit to install a plunge pool will depend on your local laws. It’s always better to check with your HOA and town clerk before digging for a new pool. Otherwise, violations could result in hefty fines.