What are circulation pumps? Are they important in a hot tub?
In order to maintain clean water, your spa will operate in circulation mode at least part of the day. Some spas will use the low speed on the primary pump running 2 – 8 hours a day. Other spas will use a much smaller, separate circulation pump running 8 – 24 hours a day. In most spasa separate circulation pump is nice to have, but not required. More often, if they are sold as an option, they are simply a way for a salesperson to jack the price up a bit.