ON the water is a great place to be, isn't it? But IN the water is mighty nice, too! Hydrotherapy is a wonderful way to soothe mind and body, and enhance your overall well-being. Melt away the day's cares with a fragrant soak... Give hard working muscles a warm massage with targeted H.O.T. (High Output Therapy) zones... Take a load off those aching joints in ergonomically-designed seating... Visit our showroom to see a tantalizing selection of Marquis Spas hot tubs. Grand Rapids Marine has a variety of models to meet everyone's needs and anyone's budget. An authorized full-service dealer, we also stock Marquis brand chemicals, hundreds of spa parts and accessories, and offer services from seasonal maintenance to in-depth diagnosis and repair.