Question: what is the difference between pool shock and chlorine tablets?
Answer: Shock is chlorine, in a high dose, meant to shock your pool and raise the chlorine level quickly. Chlorine tabs (placed in a chlorinator, floater, or skimmer basket) maintain a chlorine residual in the water. You do need to use both tabs and shock. ... You should aim to keep the chlorine level at between 1 and 3 ppm.