Hi Joyce,

Well I can tell you what they did to my pool when it was started. Usually balancing the water means they add stabalizer to the pool which is the CYA, which prevents your CL from being used up by the sunlight. Other than adding the CYA they might add some tablets or something to get some chlorine added to the water. Other than that not much else they will usually do. They usually leave it up to you to check your water for everything else.

Best thing I would do is ask them what exactly they are doing.

Eric