Welcome. You are probably already doing this, but take some time to read pertinent posts in this forum. Pay particular attention to the links in Ben's (PoolDoc's) signature. Much of what you need to know will be found there... Other items will guide you how to provide info here that will enable us to help you further. For example, we need to know the size of your pool (in gallons). Getting the proper test kit is crucial... See Ben's signature for that too.