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1 pound treats 10
Increases calcium hardness levels in pool water
water conditioner
Use this cell to plug one end of your salt cell while you clean it with muratic acid
GLB Supersonic 73% Cal Hypo Granular Chlorine Shock Size:1 lb 1 pound treats 10SuperSonic sanitizes, clarifies, fights algae and wont overstabilize pool water. Its safe for use on all pool surfaces and leaves no residue. Contains 73% available chlorine. Add 1 lb. per 10,000 gallons directly to the pool. For best results, add during the evening hours. Compatible with chlorine and salt water chlorine sanitizing systems.
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