NU-CLO HIT HARD Shock Treatment 1 LB.

Nu-Clo Hit Hard will shock you pool water with a boost of chlorine helping to remove algae and harmful bacteria as well as help you maintain crystal clear water year round.

The fast-acting 4-in-1 shock product kills bacteria and algae, restores crystal clarity to pool water within 24 hours, reduces chlorine odor and eye irritation causéd by swimming pool water, and won’t fade liners. It is convenient, easy to use and won’t over stabilize your pool. One bag treats 13,500 gallons.