The Nature 2 Water Treatment Kit contains all of the products required to keep your spa water sparkling clean. Kit contains: – Nature 2 Spa Clarifier Cartridge – Spa Boss PH Decreaser – Spa Boss PH Increaser – Spa Boss Spa Shock – Spa BossTotal Alkalinity Increaser – Test Strip-AquaChek MPS – Spa Boss Granules Chlorine – All packaged in a convenient carrying bucket.