Renew is a non-chlorine shock treatment. This fast-dissolving granular rids spa water of residual soaps, deodorants, natural oils and organic materials that can build up.
When Renew is added to the spa water, it reacts to the bromine and forms a bromine solution to destory any micro-organisms left behind by the bather. Part of the Reserve and Renew Clorine-Free Sanitizing System.
