The Lay-Z-Spa Hot Tub Clearwater Chemicals Starter Kit is a must-have for anyone purchasing their first Lay-Z-Spa hot tub. The kit includes a selection of handy products for protecting and maintaining your hot tub, plus a guide for safe and effective water treatment so that you can enjoy your new spa for as long as possible. What’s Included? 500g Chlorine Granules for disinfecting and shock treatment 500g pH Plus for increasing pH levels 700g pH Minus for decreasing pH levels 500ml Foam Remover to combat any build-up on the surface 25 test strips to test for total alkalinity, chlorine and pH Guide