Hot Tub Compatible With Sundance Spas Filter Cartridge 6540-507Hot Tub Compatible With Sundance Spas Replacement Jacuzzi Sundance filter. Sundance Spas MicroClean 2 filter uses advanced, triple layer pleated material to provide superior filtration for crystal clear water. The system efficiently traps larger particles in the upper layers of the filter and smaller particles in the lower layers. Absorbs oils and lotions, removing them from the water. Sundance 120 MicroClean Plus Fits Sundance Maxxus, Optima, Cameo,