This kit provides three months of hot tub care. The hot tub owner just needs to add their preferred sanitizer. It includes 13 Mineraluxe Cubes (11-1/2 oz), and 16 pouches of Mineraluxe Oxygen Plus (24 oz). It's a simple approach to hot tub care. Once a week, just drop a Mineraluxe Cube into the skimmer, toss a pouch of Mineraluxe Oxygen into the water, maintain a chlorine or bromine residual and keep the filter clean.