When deciding on how much chlorine for swimming pool, many people simply add more.  If the pool water is tested at all, oftentimes, they only test for the presence of chlorine, then add more.  That may be OK..up to a point.

Up until, there is a heavy rainstorm. 

Up until there is a LOT of people in the pool in a short amount of time.

Up until a child or children play in the pool and, lets say, let loose.

What then?  Then you need to shock the pool!

What is Shocking?  Simply put, shocking (also referred to as Super chlorinating) raises the chlorine level to such a high level, that it oxides, or chemically burns off organic contaminants.  Organic contaminants get into the pool from rainwater, wind blown debris, and body wastes and or pet/animal wastes.

How to Shock a Pool?  If you are on a chlorine pool maintenance plan, simply add more chlorine.  How much more…? The standard answer is 10 times the measured amount of combined chlorine in the pool.  So test your water (or have it tested), then add 10 times that amount.  Give it time for a full filter cycle..typically 12 hours in a home pool, and you should be good to go!