Not all water care products are the same. Most sanitizers are dichlor, a type of chlorine you must spoon-feed into hot tub water; it's used up immediately and must be added after each use. It also ...

Any hot tub can be a saltwater hot tub with the addition of a salt chlorine generator. Instead of adding chemicals directly to your hot tub, you add salt (about two pounds per 100 gallons of water), ...