For Emergency Pool Services: 
Description
Containing 73% available chlorine, GLB SuperSonic sanitizes, clarifies, fights algae and won’t over-stablize pool water. It can be used on all pool surfaces and leaves no residue.
$17.40
Containing 73% available chlorine, GLB SuperSonic sanitizes, clarifies, fights algae and won’t over-stablize pool water. It can be used on all pool surfaces and leaves no residue.
