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from E.T.S. Hach

Free Shipping Over $50

ShockChek Pool and Spa Test Strips is the fast, easy way to determine if you need to shock (or superchlorinate) your pool or spa. Shocking is a necessary maitenance task that keeps the water clear of harmful contaminants that can cause irritation and spread water-borne illnesses. 

Great Price: $5.99
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Price: $3.99