I called Four Star for a possible leak in my pool. Nick spent a few hours here and ran several tests in order to locate where the water was leaking from. It was concluded the very small leak is coming from the return side of the underground plumbing back to the filter. Nick was very thorough, professional and courteous taking his time to explain all the tests he was performing. I was extremely satisfied with all the work he did, and would not hesitate to use Four Star again, and I highly recommend them to anyone in need of their services