can this be converted to a saltwater hot tub? and do you sell the conversion kit?

Hello Bonnie, If you would like the BellaGrande SLT as a saltwater hot tub, you can simply order it with the in.clear bromine generating system option. You can watch a video about the in.clear system on the product page, on tab titled "Options." The system uses bromide salt in the water, making it into a saltwater hot tub. The in.clear unit inside the cabinet and is built into the water line of the spa. It automatically generates bromine (by converting the bromide salt into active bromine) when the spa if filtering, to keep your spa water clear. You can find additional info on our Salt Water Hot Tub page: