done with the use of a pool vacuum. there are many different types available. be sure to vacuum the bottom of your pool at least once every few days. you can also invest in an automatic pool vacuum. these are connected to the pool with a hose and roll around the bottom of the pool on wheels to remove debris. finally, you will want to keep the concrete or deck around your pool swept. this will help keep debris from ending up in the pool later. when doing this, always be sure to empty the debris that is caught in the skimmer.
when you are adding chlorine and shock to your 