Why “Shocking” Your Pool Isn’t a One-Time Fix

“Shock the pool” is one of the most overused phrases in pool care, and it causes a lot of bad advice. We walk through what shocking really is: raising free chlorine to a level that actually matches the pool’s chlorine demand, then giving it time to work and verifying it with testing instead of wishful thinking. If you’ve ever added gallons of chlorine and still seen the test read zero, we explain why that happens and how to avoid the endless loop of underdosing and retreating. We...