BioGuard Pool Closing Complete Type_Scale You need both

You need both

COSMO-I35-C

By stripping phosphates back down to a safe level

Every spa owner who's battled pH knows the cycle: add pH Up

BioGuard Pool Closing Complete Type_Scale You need bothBioGuard Pool Closing Complete Overview BioGuard Pool Closing Complete provides the final touch for pool closings. The concentrated 3 in 1 formula helps save time and prevent issues at the opening as well as protecting pool surfaces and equipment during the cold weather months. This product clarifies the water, prevents waterline build up, and removes phosphates. This product works perfectly with the BioGuard Arctic Blue Winter Kits. What's in the Box