I am a first time pool owner of about three years. I have been in this learning curve for about six month and can tell you it is so much better for you to handle your own chemistry and do it properly than have someone else do it. I was taking stabs in the dark before that, using the advice of the pool store people, and I guarantee their maintenance service would be no better than my previously poor maintenance. Once you get into it, with the advice of the good people here, not only will your water be balanced to more exacting standards, It is relatively easy once you get things balanced. You learn a lot and would never trust others. The Taylor testing kit might seem a little complicated at first, but once you've done it a few times it's intuitive and immensely informative. One thing the pool store people did for me was sell me a lot of different chemicals to add. The approach here is a much more simple and holistic approach, kind of like being on a healthy, whole food diet, rather than eating lots of junk food. Managing your own pool is actually enjoyable, and makes your own pool use more enjoyable. I wish I had discovered this site when we bought our home back in 2017.