I am NOT impressed with the Pool Doctor. It took alot longer to complete the job than what I was originally told. Two weeks after having a new liner installed, the liner pulled out of the corner. I called several times and kept being told a time that they would come and fix the problem. It has been 3 months and they have yet to show up!! Also, there were wrinkles in the liner....I was told that the wrinkles would be removed as soon as the water in the pool warmed up......Well, it is August and it had been well over 100 degrees for weeks.......the wrinkles are still there......Pool Doctor is not around! Very dissapointed.